1. Chem Bell RingerDay 1 - 9/2/14 What is chemistry? Objective: SWBAT give a basic definition of chemistry and familiarize themselves with the course. PA Standard: CHEM.A.1.1

2. Chem Bell RingerDay 2 - 9/3/14 List at least 4 tools chemists use in the lab. Objective: SWBAT identify and locate safety and lab equipment and safety rules. PA Standard: CHEM.A.1.1

3. Chem Bell RingerDay 3 - 9/4/14 What is alchemy? Objective: SWBAT form a hypothesis to explain observations. PA Standard: CHEM.A.1.1

4. Chem Bell RingerDay 4 - 9/5/14 What do you think matter is? Name 2 things that are matter and 2 that are not. Objective: SWBAT define and classify matter. PA Standard: CHEM.A.1.1

5. Chem Bell RingerDay 5/6 - 9/9/14 What is the most important rule in the lab? Objective: SWBAT identify safe and unsafe conditions in the lab. PA Standard: S11.A.2.2

6. Chem Bell RingerDay 1 - 9/10/14 Which weighs more: 5 kg of bricks or 5 kg of feathers? Objective: SWBAT measure mass and volume. PA Standard: CHEM.A.1.1

7. Chem Bell RingerDay 2 - 9/11/14 How can you use mass and volume to determine the identity of a substance? Objective: SWBAT define and apply the property of density. PA Standard: CHEM.A.1.1

8. Chem Bell RingerDay 3 - 9/12/14 What is the equation for density? Objective: SWBAT recall and apply concepts of matter and density. PA Standard: CHEM.A.1.1

9. Chem Bell RingerDay 4 - 9/15/14 What do the symbols and numbers in C 12 H 22 O 11 mean? Objective: SWBAT define and distinguish between element and compound. PA Standard: CHEM.A.1.1

10. Ban Dihydrogen Monoxide! Colorless, odorless, tasteless Colorless, odorless, tasteless Kills uncounted thousands of people every year. Kills uncounted thousands of people every year. Most deaths caused by accidental inhalation Most deaths caused by accidental inhalation Prolonged exposure to its solid form causes severe tissue damage. Prolonged exposure to its solid form causes severe tissue damage. Symptoms of ingestion can include Symptoms of ingestion can include excessive sweating and urination, excessive sweating and urination, a bloated feeling, a bloated feeling, nausea, nausea, vomiting vomiting body electrolyte imbalance. body electrolyte imbalance. For those who have become dependent, withdrawal means certain death. For those who have become dependent, withdrawal means certain death.

11. Ban Dihydrogen Monoxide! Also known as hydroxl acid Also known as hydroxl acid Major component of acid rain Major component of acid rain Contributes to the "greenhouse effect." Contributes to the "greenhouse effect." May cause severe burns. May cause severe burns. Contributes to the erosion of our natural landscape. Contributes to the erosion of our natural landscape. Accelerates corrosion and rusting of many metals. Accelerates corrosion and rusting of many metals. May cause electrical failures and decreased effectiveness of automobile brakes. May cause electrical failures and decreased effectiveness of automobile brakes. Been found in excised tumors of terminal cancer patients. Been found in excised tumors of terminal cancer patients. Is now an ingredient in most foods and beverages Is now an ingredient in most foods and beverages

12. Ban Dihydrogen Monoxide! Based on the evidence presented in the previous two slides, do you support the banning of dihydrogen monoxide? Based on the evidence presented in the previous two slides, do you support the banning of dihydrogen monoxide? Write at least two sentences stating your reasoning. Write at least two sentences stating your reasoning. Please sign the petition! Please sign the petition!

13. What is Dihydrogen Monoxide?

14. Chem Bell RingerDay 4 - 9/15/14 What do the symbols and numbers in C 12 H 22 O 11 mean? Objective: SWBAT define and distinguish between element and compound. PA Standard: CHEM.A.1.1

15. Chem Bell Ringer Day 5/6 - 9/17/14 Name 3 things that could be dangerous in this lab. Objective: SWBAT describe a chemical change. PA Standard: CHEM.A.1.1

16. Chem Bell RingerDay 1 - 9/18/14 What happened to the copper powder in the experiment when it was mixed with nitric acid? Objective: SWBAT explain law of conservation of mass and what happens during a chemical reaction. PA Standard: CHEM.A.1.1

17. Page 19 © 2012 W. H. Freeman and Company

18. Chem Bell RingerDay 2 - 9/19/14 What are four signs that a chemical change has occurred? Objective: SWBAT describe & apply how the periodic table is organized. PA Standard: CHEM.A.2.2.2 & A.2.3

19. Chem Bell RingerDay 3 - 9/22/14 Which feature of the puzzle pieces was the key to finding a pattern throughout all the features? Objective: SWBAT describe & apply how the periodic table is organized. PA Standard: CHEM.A.2.2.2 & A.2.3

20. Chem Bell RingerDay 4 - 9/23/14 How is the periodic table organized? Objective: SWBAT describe & apply how the periodic table is organized. PA Standard: CHEM.A.2.2.2 & A.2.3

21. Chem Bell Ringer Day 5/6 - 9/25/14 What did Mendeleev do with the gaps in his table? Objective: SWBAT describe & apply how the periodic table is organized. PA Standard: CHEM.A.2.2.2 & A.2.3

22. Chem Bell RingerDay 1 - 9/26/14 CDT Testing Objective: SWBAT apply key ideas of chemistry. PA Standard: CHEM.A & B

23. Chem Bell RingerDay 2 - 9/29/14 CDT Testing Objective: SWBAT apply key ideas of chemistry. PA Standard: CHEM.A & B

24. Chem Bell Ringer Day 3 - 9/30/14 What do you think the atom looks like? Objective: SWBAT describe & apply how the periodic table is organized. PA Standard: CHEM.A.2.2.2 & A.2.3

25. Chem Bell Ringer Day 4 - 10/1/14 What was the first model of the atom? Objective: SWBAT describe the five models of the atom. PA Standard: CHEM.A.2.1

26. Chem Bell Ringer Day 5/6 - 10/3/14 How many protons does the element you picked for the project have? Objective: SWBAT research information about an element. PA Standard: CHEM.A.2.1

27. Discussion Notes The Atomic Model Through Time

28. Discussion Notes (cont.) Scientific Model: A simplified representation of something more complex that facilitates understanding certain aspects of a real object or process. Atoms: The smallest unit of an element that retains the chemical properties of that element.

29. Discussion Notes (cont.) Nucleus: The dense, positively charged structure found in the center of the atom. It is composed of protons and neutrons. Proton: A particle with a positive charge, found in the nucleus of atoms. Electron: A particle with a negative charge. Electrons move very fast around the outside of the nucleus of atoms. Neutron: A particle that does not have a charge, found in the nucleus of atoms.

30. Check-in Here is a model of a carbon atom. 1. List two things this model tells you about the carbon atom. 2. List something this model does not tell you about the carbon atom.

31. Chem Bell Ringer Day 1 - 10/6/14 What does the atomic number tell you about an element? Objective: SWBAT describe the structure of the atom. PA Standard: CHEM.A.2.1

32. ChemCatalyst Models of a helium atom and a beryllium atom are shown. The nucleus of each contains protons and neutrons. The electrons orbit the nucleus. 1. Compare the two models. List three similarities and three differences. 2. Based on the models, why do you think helium is number 2 (the second element) and beryllium number 4 (the fourth element) on the periodic table?

33. Check-in Use your periodic table to identify these elements. 1.Atomic number is 18. 2.Has three electrons when atoms are neutral. 3.Atomic mass is 16.0.

34. Chem Bell Ringer Day 2 - 10/7/14 Are all atoms of a given element identical? Explain why or why not. Objective: SWBAT define isotope and determine average atomic mass. PA Standard: CHEM.A.2.1

35. ChemCatalyst A chemist investigating a sample of lithium found that some lithium atoms have a lower mass than other lithium atoms. The chemist drew models of the two different types of lithium atoms, as shown on the following slide.

36. ChemCatalyst (cont.) 1.What is different about the two atoms? 2.What is the atomic number of each atom? 3.What is the atomic mass of each atom?

37. Discussion Notes (cont.) Calculate the Atomic Mass of Neon

38. Chem Bell Ringer Day 3 - 10/8/14 Why are some isotopes radioactive while others are not? Objective: SWBAT differentiate between stable and radioactive isotopes. PA Standard: CHEM.A.2.1

39. Chem Bell Ringer Day 4 - 10/9/14 What do you think radioactivity is? Objective: SWBAT explain processes of nuclear change. PA Standard: CHEM.A.2.1

40. ChemCatalyst Which of the following are isotopes of copper, Cu? Explain your reasoning. A. CuB. Au C. Cu D. CuE. CuF. Cu 63 29 197 79 63 28 87 29 34 29 65 29

42. Chem Bell Ringer Day 5/6 - 10/13/14 How many protons, electrons, & neutrons does Chromium-52 have? Objective: SWBAT explain nuclear reactions. PA Standard: CHEM.A.2.1

43. ChemCatalyst Using the Nuclear Quest game, find the ten kinds of cards shown below. Which cards cause the nucleus of one element to change into the nucleus of a different element?

44. Discussion Notes Alpha Decay

45. Discussion Notes (cont.) Beta Decay

46. Discussion Notes (cont.) Nuclear chemistry is the study of changes to the nucleus. Nuclear reaction: A process that involves changes to the nucleus of an atom. Radioactive decay: A spontaneous process by which an atom emits radiation or a particle from its nucleus to become more stable. Fusion: The joining of two nuclei to form a larger nucleus accompanied by a release of energy. Fission: The splitting apart of an atomic nucleus into two smaller nuclei accompanied by a release of energy.

47. Discussion Notes (cont.) Changes in the nucleus of an atom can change the identity of an element. Alpha particle: A particle composed of two protons and two neutrons, equivalent to the nucleus of a helium atom. Beta particle: An electron emitted from the nucleus of an atom during beta decay. Gamma ray: A form of high-energy electromagnetic radiation emitted during nuclear reactions.

48. Discussion Notes (cont.) Nuclear changes frequently involve the transfer of large amounts of energy. Alpha decay: A nuclear reaction in which an atom emits an alpha particle. Its atomic number decreases by 2, and its mass number decreases by 4. Beta decay: A nuclear reaction in which a neutron changes into a proton, and the atom emits a beta particle. The atom’s atomic number increases by 1.

49. Chem Bell Ringer Day 1 - 10/14/14 Do you think gold can be created? Explain your reasoning. Objective: SWBAT explain nuclear reactions and write nuclear equations. PA Standard: CHEM.A.2.1

50. Discussion Notes (cont.) Nuclear Chain Reactions

51. Chem Bell Ringer Day 2 - 10/15/14 Write the nuclear equation for Polonium-209 going through alpha decay. Objective: SWBAT apply knowledge of nuclear chemistry to write equations and describe isotopes. PA Standard: CHEM.A.2.1

52. Chem Bell Ringer Day 3 - 10/16/14 What evidence did Rutherford have to claim that there was a nucleus in the atom? Objective: SWBAT apply knowledge of nuclear chemistry to write equations and describe isotopes. PA Standard: CHEM.A.2.1

53. Chem Bell Ringer Day 4 - 10/20/14 Write the nuclear equation for the most abundant isotope of Bismuth going through beta decay. Objective: SWBAT apply knowledge of nuclear chemistry to write equations and describe isotopes. PA Standard: CHEM.A.2.1

54. Chem Bell Ringer Day 5/6 - 10/22/14 Draw Rutherford’s nuclear model of the atom. Objective: SWBAT identify the presence of an element from a flame test. PA Standard: CHEM.A.2.1 & A.2.2.4

57. Chem Bell Ringer Day 1 - 10/23/14 Why do different elements give off different flame colors? Objective: SWBAT explain what spectroscopy is. PA Standard: CHEM.A.2.2 & 2.3

58. Chem Bell Ringer Day 2 - 10/24/14 Why do you think elements in the same group have similar chemical properties? Objective: SWBAT create the correct shell model of the atom for a given element. PA Standard: CHEM.A.2.2 & 2.3

59. Chem Bell Ringer Day 3 - 10/27/14 Which elements are chemically stable and do not react? Objective: SWBAT explain how ions are formed and predict an ions charge. PA Standard: CHEM.A.2.2 & 2.3

60. Chem Bell Ringer Day 4 - 10/28/14 Draw the shell model for antimony. Objective: SWBAT explain how ions are formed and predict an ions charge. PA Standard: CHEM.A.2.2 & 2.3

61. Chem Bell Ringer Day 5/6 - 10/30/14 Predict the formula of a compound between magnesium and chlorine. Objective: SWBAT explain how ionic compounds form and predict the resulting formula. PA Standard: CHEM.A.2.2 & 2.3

62. Chem Bell Ringer Day 1 - 10/31/14 What elements make up table salt & what is the chemical name for table salt? Objective: SWBAT explain how ionic compounds form and predict the resulting formula & name. PA Standard: CHEM.A.2.2 & 2.3

63. Chem Bell Ringer Day 2 - 11/3/14 Break down the term polyatomic ion and write down what you think it means. Objective: SWBAT name and write formulas for binary ionic compounds. PA Standard: CHEM.A.1.1.5

64. Chem Bell Ringer Day 3 - 11/4/14 What is the formula between sodium (Na + ) and sulfate (SO 4 ) -2 ? Objective: SWBAT name and write formulas for compounds containing polyatomic ions. PA Standard: CHEM.A.1.1.5

65. Chem Bell Ringer Day 4 - 11/5/14 What is the formula for an ionic compound between iron and oxygen? Objective: SWBAT name and write formulas for compounds containing polyatomic ions and transition metals. PA Standard: CHEM.A.1.1.5

66. Chem Bell Ringer Day 5/6 - 11/7/14 What is the name of TiO 2 ? Objective: SWBAT describe the use of transition metal chemistry in paint pigments. PA Standard: CHEM.A.1.1.5

67. Van Gogh’s Fifteen Sunflowers

68. Chem Bell Ringer Day 1 - 11/10/14 Draw the shell model for Gallium. Objective: SWBAT write the electron configuration for a given element. PA Standard: CHEM.A.2.2

69. Chem Bell Ringer Day 2 - 11/12/14 Write the electron configuration for cesium, Cs. Objective: SWBAT write the electron configuration for a given element. PA Standard: CHEM.A.2.2

70. Chem Bell Ringer Day 3 - 11/13/14 Write the electron configuration and noble gas notation for tin, Sn. Objective: SWBAT write the electron configuration for a given element. PA Standard: CHEM.A.2.2

71. Chem Bell Ringer Day 4 - 11/14/14 Write the electron configuration and noble gas notation for aluminum, Al. Objective: SWBAT write the electron configuration for a given element. PA Standard: CHEM.A.2.2

72. Chem Bell Ringer Day 5/6 - 11/18/14 What do you think happens to the atoms in salt when it dissolves? Objective: SWBAT classify substances based on properties. PA Standard: CHEM.A.1.2

73. Chem Bell Ringer Day 1 - 11/19/14 List the 4 types of bonding and one property for each. Objective: SWBAT describe the properties of each type of bonding. PA Standard: CHEM.A.1.1&2; B.1.3&4

74. Four Models of Bonding

75. The chart created in the previous lesson can now be labeled with the four types of bonds.

76. Aqueous copper (II) sulfate, CuSO 4 (aq), is really copper cations, Cu 2+, and sulfate anions, SO 4 2–. Before connecting to the battery

77. Once the battery is hooked up, one nickel strip has a positive charge, and the other has a negative charge. After connecting to the battery

78. Chem Bell Ringer Day 2 - 11/20/14 Give an example substance for each of the 4 types of bonding. Objective: SWBAT predict the properties of a substance from its chemical formula. PA Standard: CHEM.A.1.1&2; B.1.3&4

79. Chem Bell Ringer Day 3 - 11/21/14 Predict the type of bonding and typical properties of NH 3. Objective: SWBAT predict the properties of a substance from its chemical formula. PA Standard: CHEM.A.1.1&2; B.1.3&4

80. Chem Bell Ringer Day 4 - 11/24/14 List 3 ways the periodic table can help you on the upcoming exam. Objective: SWBAT recall key concepts of matter, its properties, the atom, the periodic table, and chemical bonding. PA Standard: CHEM.A & B

81. Chem Bell Ringer Day 5/6 - 11/25/14 Unit 1 Exam Objective: SWBAT recall key concepts of matter, its properties, the atom, the periodic table, and chemical bonding. PA Standard: CHEM.A & B

82. Chem Bell Ringer Day 1 - 12/4/14 What do you think is happening on a molecular level when you smell something? Objective: SWBAT detect patterns in chemical formulas and relate them to properties. PA Standard: CHEM.A.1.1 & B.1.3 & 4

83. Chem Bell Ringer Day 2 - 12/5/14 Predict the smell of each molecule below. Ethyl pentanoate: C 7 H 14 O 2 Butyric acid: C 4 H 8 O 2 Ethyl acetate: C 4 H 8 O 2 Objective: SWBAT recognize & describe isomers. PA Standard: CHEM.A.1.1 & B.1.3 & 4

84. Chem Bell Ringer Day 3 - 12/8/14 How many electrons do these elements need to gain to be stable? HydrogenOxygen NitrogenCarbon Objective: SWBAT draw structural formulas. PA Standard: CHEM.A.1.1 & B.1.3 & 4

85. Chem Bell Ringer Day 4 - 12/9/14 What is the HONC 1234 rule? Objective: SWBAT draw Lewis structures. PA Standard: CHEM.A.1.1 & B.1.3 & 4

86. Chem Bell Ringer Day 5/6 - 12/10/14 Draw Lewis structures for: Cl 2 & O 2 Objective: SWBAT draw Lewis structures and identify functional groups. PA Standard: CHEM.A.1.1 & B.1.3 & 4

87. Chem Bell Ringer Day 1 - 12/12/14 Draw the Ketone functional group. (Hint: It smells minty.) Objective: SWBAT relate smell to functional groups. PA Standard: CHEM.A.1.1 & B.1.3 & 4

88. Chem Bell Ringer Day 2 - 12/15/14 What is one thing that is absolutely not allowed in this lab? Objective: SWBAT synthesize an organic compound. PA Standard: CHEM.A.1.1 & B.1.3 & 4

89. Chem Bell RingerDay 3 - 12/16/14 CDT Testing Objective: SWBAT apply key ideas of chemistry. PA Standard: CHEM.A & B

90. Chem Bell RingerDay 4 - 12/17/14 CDT Testing Objective: SWBAT apply key ideas of chemistry. PA Standard: CHEM.A & B

91. Chem Bell Ringer Day 5/6 - 12/19/14 What do you think happened to the acid & alcohol molecules in the lab to make a sweet smell? Objective: SWBAT apply concepts of covalent bonding to analyze molecules. PA Standard: CHEM.A.1.1 & B.1.3 & 4

92. Chem Bell Ringer Day 1 - 12/22/14 What do you think makes an object glow in the dark? Objective: SWBAT explain the phenomena of fluorescence & phosphorescence. PA Standard: CHEM.A.2.2

93. Chem Bell Ringer Day 2 - 12/23/14 REINDEER GAMES Objective: SWBAT wear ugly Christmas sweaters. PA Standard: SANTA.12.25

94. Chem Bell Ringer Day 3 - 1/5/15 Do you think any of these molecules will smell similar? CitronellolC 10 H 20 O GeraniolC 10 H 18 O MentholC 10 H 20 O Objective: SWBAT relate molecular models of a substance to its molecular properties. PA Standard: CHEM.A.1.1 & B.1.4

95. Do you think any of these molecules will smell similar? What evidence do you have to support your prediction? menthol C 10 H 20 O geraniol C 10 H 18 O citronellol C 10 H 20 O

96. Chem Bell Ringer Day 4 - 1/6/15 Which is the correct ball and stick model for ethanol? Objective: SWBAT determine the shape of molecules. PA Standard: CHEM.B.1.4

97. Chem Bell Ringer Day 5/6 - 1/8/15 Draw the Lewis dot structure and structural formual for formaldehyde, CH 2 O, and predict its shape. Objective: SWBAT predict the shape of molecules and create 3-D models to represent them. PA Standard: CHEM.B.1.4

98. Chem Bell Ringer Day 1 - 1/9/15 What similarities & differences do you see in these two models? Objective: SWBAT build a model given the structural formula. PA Standard: CHEM.A.1.1 & B.1.4 Space-filling model of citronellol Ball-and-stick model of citronellol

99. Chem Bell Ringer Day 2 - 1/12/15 What smell do you predict for molecules that are long and stringy in shape? Objective: SWBAT predict smell based on molecular formula, name, and shape. PA Standard: CHEM.A.1.1 & B.1.4

100. Chem Bell Ringer Day 3 - 1/13/15 Suppose you needed to separate coins but could not see them. How could you detect and sort the coins? Objective: SWBAT create a model to explain how the nose detects smell. PA Standard: CHEM.A.1.1 & B.1.4

101. Chem Bell Ringer Day 4 - 1/14/15 What is chemistry all about? Objective: SWBAT use the periodic table to analyze the properties and structure of matter. PA Standard: CHEM.A.1; A.2; B.1.3; B.1.4

102. Chem Bell Ringer Day 5/6 - 1/16/15 Midterm Exam Objective: SWBAT apply the organization of the periodic table to explain the structure & properties of matter. PA Standard: CHEM.A.1.1 & B.1.4

103. Chem Bell Ringer Day 1/2 - 1/20/15 What is your model for how the nose detects smell? Objective: SWBAT create a model to explain how the nose detects smell. PA Standard: CHEM.A.1.1 & B.1.4

104. Chem Bell Ringer Day 3 - 1/21/15 Early Dismissal Objective: SWBAT apply molecular shape to physical properties. PA Standard: CHEM.A.1.1 & B.1.4

105. Chem Bell Ringer Day 4 - 1/22/15 What smell does a ball-shaped molecule have? Objective: SWBAT apply molecular shape to physical properties. PA Standard: CHEM.A.1.1 & B.1.4

106. Chem Bell Ringer Day 5/6 - 1/29/15 What smell does a frying-pan-shaped molecule have? Objective: SWBAT apply molecular shape to physical properties. PA Standard: CHEM.A.1.1 & B.1.4

107. Chem Bell Ringer Day 1 - 1/30/15 Objective: SWBAT describe the behavior of polar molecules and apply it to intermolecular forces. PA Standard: CHEM.A.1.1 & B.1.4 If a molecule fits into a receptor site in the nose, it seems as if it should smell. Yet most of the molecules in air, O 2, N 2, CO 2, & Ar, do not have a smell. What do you think is going on?

108. Chem Bell Ringer Day 2 - 2/3/15 Objective: SWBAT describe the behavior of polar molecules and apply it to intermolecular forces. PA Standard: CHEM.A.1.1 & B.1.4 Describe what happens when you rub a balloon on your hair and explain why you think it happens.

109. The partial charges on polar molecules cause individual molecules to be attracted to each other.

110. Chem Bell Ringer Day 3 - 2/4/15 Objective: SWBAT explain what causes polarity. PA Standard: CHEM.A.1.1 & B.1.4 If the penguin represents a hydrogen atom and the polar bear represents a chlorine atom, what does the ice cream represent in the drawing?

111. Chem Bell Ringer Day 4 - 2/5/15 Objective: SWBAT use the electronegativity scale to predict bond dipoles and bond type. PA Standard: CHEM.A.1.1 & B.1.4 Where are the most electronegative elements? Where are the least electronegative elements? (Hint: Look at the electronegativity scale in your packet.)

112. Chem Bell Ringer Day 5/6 - 2/9/15 Objective: SWBAT use the electronegativity scale to determine the polarity of a molecule. PA Standard: CHEM.A.1.1 & B.1.4 Consider the molecule PBr 3 : 1.Draw the structural formula with lone pairs. 2.Identify its shape. 3.Determine if it is a polar or nonpolar molecule.

113. Chem Bell Ringer Day 1 - 2/10/15 Objective: SWBAT determine the polarity of a molecule and relate it to smell. PA Standard: CHEM.A.1.1 & B.1.4 HCl and NH 3 have a smell and dissolve easily in water. O 2, N 2, and CH 4 do not have a smell and only small amounts dissolve in water. Why is there a difference?

114. Chem Bell Ringer Day 2 - 2/11/15 Objective: SWBAT predict whether a molecule will smell based on its molecular properties. PA Standard: CHEM.A.1.1 & B.1.4 An open perfume bottle has a smell while a piece of paper doesn’t. Explain why.

115. Chem Bell Ringer Day 3 - 2/12/15 Objective: SWBAT predict whether a molecule will smell based on its molecular properties. PA Standard: CHEM.A.1.1 & B.1.4 List 3 properties of substances that don’t smell and 3 properties for substances that do smell.

116. Chem Bell Ringer Day 4 - 2/13/15 Objective: SWBAT predict whether a molecule will smell based on its molecular properties. PA Standard: CHEM.A.1.1 & B.1.4 How do you determine if a molecule is polar or nonpolar?

117. Chem Bell Ringer Day 5/6 - 2/18/15 Objective: SWBAT recognize mirror-image isomers. PA Standard: CHEM.A.1.1 & B.1.4 Which of these objects look identical in a mirror? Which look different? Why? glovebarbellspringtetrahedron

118. Chem Bell Ringer Day 1 - 2/19/15 Objective: SWBAT relate molecular structure to physical properties. PA Standard: CHEM.A.1.1 & B.1.4 SUB

119. Chem Bell Ringer Day 2 - 2/23/15 Objective: SWBAT relate molecular structure to physical properties. PA Standard: CHEM.A.1.1 & B.1.4 What is a mirror image isomer?

120. Chem Bell Ringer Day 3 - 2/24/15 Objective: SWBAT relate molecular structure to physical properties. PA Standard: CHEM.A.1.1 & B.1.4 List 5 functional groups and their smells.

121. Chem Bell Ringer Day 4 - 2/25/15 Objective: SWBAT relate molecular structure to physical properties. PA Standard: CHEM.A.1.1 & B.1.4 How are proteins related to smell?

122. Chem Bell Ringer Day 5/6 - 2/27/15 Objective: SWBAT relate molecular structure to physical properties. PA Standard: CHEM.A.1.1 & B.1.4 How do you determine if an amino acid is polar or nonpolar?

123. Chem Bell Ringer Day 1 - 3/2/15 Objective: SWBAT explain the phenomenon of weather. PA Standard: CHEM.B.2.2 Answer the ChemCatalyst on p.203 in the Weather packet.

124. Chem Bell Ringer Day 2 - 3/3/15 Objective: SWBAT solve proportionality problems. PA Standard: CHEM.B.2.2 Early Dismissal

125. Chem Bell Ringer Day 3 - 3/5/15 Objective: SWBAT solve proportionality problems. PA Standard: CHEM.B.2.2 Answer the ChemCatalyst on p.206 in the Weather packet.

126. Chem Bell Ringer Day 4 - 3/6/15 Objective: SWBAT relate molecular structure to physical properties. PA Standard: CHEM.A.1.1 & B.1.4 Unit 2 Retest

127. Chem Bell Ringer Day 5/6 - 3/10/15 Objective: SWBAT calculate density for solids & liquids. PA Standard: CHEM.B.2.2 Is 3 inches of snow the same as 3 inches of rain? Explain.

128. Chem Bell Ringer Day 1 - 3/11/15 Objective: SWBAT create a temperature scale and describe how thermometers work. PA Standard: CHEM.B.2.2 Weather Forecast: Moscow, Russia: 60% chance of rain, high 30°C Washington, D.C.: 70% chance of rain, high 50°F Which city will be warmer?

129. Chem Bell Ringer Day 2 - 3/12/15 Objective: SWBAT describe the motion of gases according to kinetic theory of gases. PA Standard: CHEM.B.2.2 SUB

130. Chem Bell Ringer Day 3 - 3/13/15 Objective: SWBAT describe the motion of gases according to kinetic theory of gases. PA Standard: CHEM.B.2.2 What is the coldest temperature something can get to? What limits how cold something can get?

131. Chem Bell Ringer Day 4 - 3/16/15 Objective: SWBAT solve simple gas law problems. PA Standard: CHEM.B.2.2 In a lava lamp, a bulb at the bottom heats the “lava” and it rises. Near the top, the lava cools and falls. Explain why.

132. Chem Bell Ringer Day 5/6 - 3/18/15 Objective: SWBAT explain the role of temperature and density in weather patterns. PA Standard: CHEM.B.2.2 Answer the ChemCatalyst on p.223 in the Unit 3 Weather Packet.

133. Chem Bell Ringer Day 1 - 3/19/15 Objective: SWBAT explain weather patterns in general terms. PA Standard: CHEM.B.2.2 Explain why precipitation follows a cold front but comes before a warm front.

134. Chem Bell Ringer Day 2 - 3/20/15 Objective: SWBAT identify the number of sig figs in a number. PA Standard: CHEM.A.1.1.3 What are significant figures?

135. Chem Bell Ringer Day 3 - 3/23/15 Objective: SWBAT apply key concepts of chemistry. PA Standard: CHEM A & B CDT

136. Chem Bell Ringer Day 4 - 3/24/15 Objective: SWBAT apply key concepts of chemistry. PA Standard: CHEM A & B CDT

137. Chem Bell Ringer Day 5/6 - 3/26/15 Objective: SWBAT identify the number of sig figs in a number. PA Standard: CHEM.A.1.1.3 4.73 / 0.056 Round to the correct number of sig figs.

138. Chem Bell Ringer Day 1 - 3/27/15 Objective: SWBAT identify the number of sig figs in a number. PA Standard: CHEM.A.1.1.3 What do sig figs keep track of?

139. Chem Bell Ringer Day 2 - 3/30/15 Objective: SWBAT apply sig figs rules to measurements and calculations. PA Standard: CHEM.A.1.1.3 Explain the difference between accuracy and precision using your address.

140. Chem Bell Ringer Day 3 - 3/31/15 Objective: SWBAT apply sig figs rules to measurements and calculations. PA Standard: CHEM.A.1.1.3 What is the rule for sig figs when adding or subtracting?

141. Chem Bell Ringer Day 4 - 4/1/15 Objective: SWBAT define and describe the use of the mole. PA Standard: CHEM.A.1.1.3 & B.1.1.1 What is the mole?

142. Chem Bell Ringer Day 5/6 - 4/6/15 Objective: SWBAT apply the mole concept and unit conversions to solve problems. PA Standard: CHEM.A.1.1.3 & B.1.1.1 Convert 4.00 weeks to seconds.

143. Chem Bell Ringer Day 1 - 4/7/15 Objective: SWBAT apply the mole concept and unit conversions to solve problems. PA Standard: CHEM.A.1.1.3 & B.1.1.1 How many grams are in one mole of calcium?

144. Chem Bell Ringer Day 2 - 4/8/15 Objective: SWBAT apply the mole concept and unit conversions to solve problems. PA Standard: CHEM.A.1.1.3 & B.1.1.1 How many moles are in 350.0 grams of zinc?

145. Chem Bell Ringer Day 3 - 4/9/15 Objective: SWBAT apply the mole concept and unit conversions to solve problems. PA Standard: CHEM.A.1.1.3 & B.1.1.1 How many atoms are in 65.0 grams of lithium?

146. Chem Bell Ringer Day 4 - 4/10/15 Objective: SWBAT apply the mole concept and unit conversions to solve problems. PA Standard: CHEM.A.1.1.3 & B.1.1.1 What is the mass in grams of 4.00 x 10 23 atoms of aluminum?

147. Chem Bell Ringer Day 5/6 - 4/14/15 Objective: SWBAT apply the mole concept and unit conversions to solve problems. PA Standard: CHEM.A.1.1.3 & B.1.1.1 How many moles of oxygen in 12 moles of H 2 SO 4 ?

148. Chem Bell Ringer Day 1 - 4/15/15 Objective: SWBAT apply the mole concept and unit conversions to solve problems. PA Standard: CHEM.A.1.1.3 & B.1.1.1 How many atoms of chlorine in 8.0 moles of AlCl 3 ?

149. Chem Bell Ringer Day 2 - 4/16/15 Objective: SWBAT apply a set of rules to name compounds and write chemical formulas. PA Standard: CHEM.A.1.1.5 What is the chemical formula of beryllium phosphide?

150. Chem Bell Ringer Day 3 - 4/17/15 Objective: SWBAT apply a set of rules to name compounds and write chemical formulas. PA Standard: CHEM.A.1.1.5 What is the chemical formula of sodium phosphate?

151. Chem Bell Ringer Day 4 - 4/20/15 Objective: SWBAT apply a set of rules to name compounds and write chemical formulas. PA Standard: CHEM.A.1.1.5 What is the chemical formula of hydrosulfuric acid?

152. Chem Bell Ringer Day 5/6 - 4/22/15 Objective: SWBAT apply a set of rules to name compounds and write chemical formulas. PA Standard: CHEM.A.1.1.5 What is the technical name for water?

153. Chem Bell Ringer Day 1 - 4/23/15 Objective: SWBAT calculate percent composition of a compound. PA Standard: CHEM.B.1.2.3 What is the percent composition of beryllium cyanide?

154. Chem Bell Ringer Day 2 - 4/24/15 Objective: SWBAT calculate percent composition of water in a hydrate. PA Standard: CHEM.B.1.2.3 What is the formula mass of CuSO 4 5H 2 O?

155. Chem Bell Ringer Day 3 - 4/27/15 Objective: SWBAT convert among moles, grams and particles of compounds. PA Standard: CHEM.B.1.1.1 How many molecules are in 275 grams of sodium oxalate?

156. Chem Bell Ringer Day 4 - 4/28/15 Objective: SWBAT convert among moles, grams and particles of compounds. PA Standard: CHEM.B.1.1.1 How many moles of oxygen are in 275 grams of sodium oxalate?

157. Chem Bell Ringer Day 5/6 - 4/29/15 Objective: SWBAT convert among moles, grams and particles of compounds. PA Standard: CHEM.B.1.1.1 How many total ions are in 275 grams of sodium oxalate?

158. Chem Bell Ringer Day 1 - 5/1/15 Objective: SWBAT convert among moles, grams and particles of compounds. PA Standard: CHEM.B.1.1.1 How many atoms of nitrogen are in 300.0 g of ammonium nitrate?