Monday October 28th, 2013 Schedule: Entry Task/Warm-Up Notes: How to construct a Bohr Structure Entry Task/Warm-Up Please take your notebook and your homework Due Today: Word Splash and Find that Element Worksheet Objective: I can identify and construct Bohr and Lewis Structures Homework: 1. Bohr Structure Practice due Tuesday 10/29/2013 for 20 points

C Bohr Diagrams Review Draw a nucleus with the element symbol inside. Carbon is in the 2nd period, so it has two energy levels, or shells. Draw the shells around the nucleus. C

C Bohr Diagrams Review Add the electrons. Carbon has 6 electrons. The first shell can only hold 2 electrons. C

Bohr Structure Since you have 2 electrons already drawn, you need to add 4 more. These go in the 2nd shell. Add one at a time -starting on the right side and going counter clock-wise. C

O Bohr Diagrams Try the following elements on your own: H He O - 8 electrons Al Ne K O

Al Bohr Diagrams Try the following elements on your own: H He O Al - 13 electrons Ne K Al

O Bohr Diagrams Try the following elements on your own: H He O - 8 electrons Al Ne K O

C Bohr Diagrams Review Complete Atomic Basic Worksheet Check your work. You should have 6 total electrons for Carbon. Only two electrons can fit in the 1st shell. The 2nd shell can hold up to 8 electrons. The 3rd shell can hold 18, but the elements in the first few periods only use 8 electrons. C Complete Atomic Basic Worksheet

Al Bohr Diagrams Try the following elements on your own: H He O Al - 13 electrons Ne K Al

Tuesday, October 29th, 2013 Schedule: Entry Task/Warm-Up Notes: Lewis Structures Entry Task/Warm-Up Please take your notebook and your homework Due Today: Bohr Structure Practice Objective: I can differentiate between chemical and physical properties Homework: Lewis Structure Practice Wed/Thurs 10/30-10/31 for 27 Points

Lewis Structures Review Find out which group (column) your element is in. This will tell you the number of valence electrons your element has. You will only draw the valence electrons. www.chem4kids.com

Lewis Structures Review Write the element symbol. Carbon is in the 4th group, so it has 4 valence electrons. Starting at the right, draw 4 electrons, or dots, counter-clockwise around the element symbol. C

Lewis Structures Review Check your work. Using your periodic table, check that Carbon is in the 4th group. You should have 4 total electrons, or dots, drawn in for Carbon. C Complete Lewis Structure Notes Worksheet and Atomic Basic Worksheet SHOW FOR A STAMP WHEN DONE!

Lewis Structures Homework Assignment On a sheet of paper draw Lewis Structures for the following elements: Hydrogen, Barium, Silicon, Neon, Oxygen, Sulfur, Iodine, Magnesium, Aluminum, Potassium, Bromine, Arsenic, Fluorine, Sodium, Calcium, Strontium, Rubidium, Cesium, Xenon, Indium, Tin, Selenium, Tellurium. Draw Bohr Structures for the following elements: Boron, Sulfur, Hydrogen and Magnesium

Wed/Thurs 10/30-10/31/2013 Entry Task/Warm-Up Please take your notebook and your homework Due Today: Lewis Structure Practice Schedule: Notes: Physical and Chemical Changes Objective: I can differentiate between chemical and physical properties Homework: Physical vs. Chemical Properties Worksheet due Friday 11/1/2013 for 15 Points

Atomic Basics Worksheet!! You will have 30 minutes in class to complete this assignment. It will be TURNED IN FOR A GRADE, not on your stamp sheet. When you are finished, bring it up to Ms. Andrews’ desk and find something quietly to do for the remainder of the time This assignment is worth 25 points before the end of the hour, if it is not finished, TURN IT IN TORMORROW FOR LATE CREDIT!!

Page 29 Physical Property Characteristic of a pure substance that can be observed WITHOUT changing it into another substance.

Physical Properties of Matter It does NOT CHANGE into something else Examples color shape taste state/phase density D = m V

Physical Change a change in shape, size, color, or state a change without a change in chemical composition a change that is reversible The Mixtures Lab Examples tearing paper cutting your hair change in state

Page 29 Chemical Property A characteristic of a pure substance that describes its ability to change into a DIFFERENT substance.

Chemical Properties of Matter changes into a new substance Examples flammability reactivity with vinegar reactivity with oxygen Iron + Oxygen  Iron oxide (rust) 2Fe + 3O2  Fe2O3

combining sulfuric acid and sugar Chemical Change a change in which a substance becomes another substance having different properties a change that is not reversible using ordinary physical means Changes that usually cause heat, sound, light, odor, fizzing/foaming, color changes Examples combining sulfuric acid and sugar burning a piece of wood soured milk Salt: http://www.schooltube.com/video/2fa9cb3e39064832 b31d/Reaction-of-Sodium-and-Chlorine

Chemical or Physical Property? Paper is white Boiling point of H2O is 100oC Zinc reacts with hydrochloric acid and creates hydrogen gas Nitrogen does not burn Sulfur smells like rotten eggs Physical Property Physical Property Chemical Property Chemical Property Physical Property

I.S. Learning Goal: I can describe predict properties of elements and compounds using trends of the periodic table (e.g., metals, non-metals, bonding – ionic/covalent).

Comparing Physical and Chemical Properties Substance/Matter Physical Property Chemical Property Helium Less dense than air Nonflammable Wood Grainy texture Flammable Baking soda White powder Reacts with vinegar to produce bubbles Powdered sugar Does not react with vinegar Rubbing alcohol Clear liquid Red food coloring Red color Reacts with bleach and loses color Iron Malleable Reacts with oxygen

Chemical or Physical Change? Bending a Paper Clip Baking a cake The sublimation of carbon dioxide Crushing an aluminum can Vinegar and baking soda combining to create salt and water Physical Change Chemical Change Physical Change Physical Change Chemical Change

Friday 11/8/2013 Entry Task/Warm-Up Schedule: Notes: 4 States of Matter Grade Checks Entry Task/Warm-Up Please take your notebook and your homework Due Today: Physical and Chemical Changes Worksheet Objective: I can differentiate between the four states of matter Homework: Review notes for Quiz on Tuesday 11/5/2013!!! Matter Crossword Puzzle due Monday 11/4/2013 20 Points States of Matter Note Page for 10 Points due 11/4/2013

4 Physical States of Matter Solid Liquid Gas Plasma

Solid Particles are tightly compact Particles vibrate without the ability to move freely Definite shape and volume Solid Animation

Liquid Particles are tightly compact, but able to move around close to each other No definite shape, but definite volume Liquid Animation

Gas Particles can easily spread out or move close together Particle move freely and with a lot of energy No definite shape or volume Gas Simulation

Plasma Why do you think this is the most common form/state of matter in the universe? Exist at extremely high temperatures (several million degrees Celsius) Particles are broken apart Particles move freely and with extremely high energy This form is not too common on Earth, however it is the most common form of matter in the universe No definite shape or volume (?) Examples: Florescent and neon lights, lightning, aurora borealis - + + + - -

States of Matter Diagram http://www.youtube.com/watch?v=vDZhUkp30tE

States of Matter Continuum What about this continuum could be considered a little misleading? Taken from: http://www.chem4kids.com/files/matter_becondensate.html

Mass vs. Weight Mass Weight a measure of how much matter an object is made of does not change, regardless of where something or someone is Weight the force of gravity on an object equal to the mass of the body times the local acceleration of gravity Why do you think the person’s weight is less on the moon? Mass = 59 kg Mass = 59 kg Weight = 579 N Weight = 96 N http://www.exploratorium.edu/ronh/weight/index.html

Density a measure of the amount of matter present in a given volume of a substance typically expressed in the following units: grams per cubic centimeter (g/cm3) for solids grams per milliliter (g/ml) for liquids can change as temperature and pressure change Which do you think is more dense? Why?

The Density Triangle V = m D D = m V m = D V . m . D V

Calculating Density Density can be calculated by dividing the mass of an object by its volume Sample Problem Timothy found a solid metal block that has a mass of 100 grams and a volume of 25 cm3. What would be the density of the block? D = m V D = = 100 grams 4 grams cm3 25 cm3

Practice Problems D = D = 27 g 3.86 grams cm3 7 cm3 20 grams Find the density of a substance with a mass of 27 g and a volume of 7 cm3. 2. A block of maple has a mass of 20 grams and a volume of 26.5 cm3. What is the density of the block? D = m V 27 g 3.86 grams cm3 D = = 7 cm3 D = m V 20 grams 0.75 grams cm3 D = = 26.5 cm3

Monday 11/4/2013 Entry Task/Warm-Up Schedule: Review Day!! Activity: Mind Map and Lewis Structure Entry Task/Warm-Up Please take your notebook and your homework Due Today: Nothing due Today!! Objective: I can differentiate between the different states of matter Homework: Review notes for Quiz TOMORROW Tuesday 11/5/2013!!! Lewis Structure due Tuesday 11/5/2013 for 20 Points Chemistry Web due TODAY 11/5/2013 TURNED IN FOR 35 POINTS

Tuesday 11/5/2013 Entry Task/Warm-Up Schedule: Please take your notebook and your homework Due Today: Lewis Structure Review Chemistry Web turned in for a late grade of 29/35! Schedule: Quiz Today!! Objective: I can differentiate between the different states of matter Homework: No homework today! Chemistry Exam Friday 11/15/2013

Wed/Thursday 11/6-11/7/2013 Entry Task/Warm-Up Schedule: Notes: Solutions and Mixtures Lab: Tasty Solutions Entry Task/Warm-Up Please take your notebook and your homework Due Today: Nothing is due today!! Objective: I can differentiate between the different mixtures and solutions Homework: Finish Tasty Solutions Lab Write Up due Today 11/7/2013!!!

Solvent Solvent - Solute - Solution Part of the solution that is present in largest amount and dissolves a solute What liquid is called the “universal solvent”? WATER

Part of solution present in lesser amount and dissolved by solvent Solute Part of solution present in lesser amount and dissolved by solvent

Solution A well mixed mixture containing a solvent and at least one solute that has the same properties throughout. Tasty solution activity

Page 30 Mixture Made of two or more substances- elements, compounds or both- that are together in the same place but are not chemically combined.

Heterogeneous Mixture Page 30 Heterogeneous Mixture You can see the different parts

Page 30 Homogeneous Mixture So evenly mixed that you can’t see the different parts

Heat- transfer of energy

Exothermic- heat energy EXITS the system - ex. Combustion, burning                           http://www.graspr.com/videos/potassium-permanganate-and-glycerine-2

2Na(s) + Cl2(g)  2NaCl(s) + energy Salt An example of an exothermic reaction is the mixture of sodium metal and chlorine gas which yields table salt. 2Na(s) + Cl2(g)  2NaCl(s) + energy http://www.schooltube.com/video/2fa9cb3e39064832b31d/Reaction-of-Sodium-and-Chlorine

Endothermic- heat energy ENTERS the system Page 31 Endothermic- heat energy ENTERS the system - surroundings usually feel cooler ex. Cold packs, melting ice

Tasty Solutions Lab Procedure: Step 1: Place one piece of candy in your mouth and allow it to dissolve without using your tongue or teeth to help! Record the time it takes for the candy to dissolve in the chart. Step 2: Place another piece of candy in your mouth and allow it to dissolve using only your tongue to move it around. Record the time it takes for the candy to dissolve in the chart. Step 3: Place another piece of candy in your mouth and allow it to dissolve using your tongue and teeth. Record the time it takes for the candy to dissolve in the chart.

Tasty Solutions Lab Lab Write-Up You are to answer every question in complete sentences on a separate sheet of paper Record time in seconds When constructing your graph, be sure to include: key, color, labels, x and y axis and titles Question #2: Explain your reasoning for your answers 2-3 sentences Question #4: Answer question, and explain why in 4-5 sentences Question #5: Answer in 4-5 sentences Add question #6: Did your dissolving time increase or decrease? Explain why this may have happened. Answer in 5-7 sentences

Friday 11/8/2013 Entry Task/Warm-Up Schedule: Periodic Packet due Tuesday 11/12/2013 for 30 Points Grade Check Today! Entry Task/Warm-Up Please take your notebook and your homework IMPORTANT DATES!! Stamp Sheet due Wednesday/Thursday 11/13-11/14 Notebook Check Next week! Chemistry Exam Friday!! Objective: I can differentiate between the different states of matter Homework: Stamp Sheet due Wed/Thurs! Chemistry Exam Friday 11/15/2013 NO SCHOOL MONDAY!

Tuesday 11/12/2013 IMPORTANT DATES!! Schedule: Stamp Sheet due Friday 11/18/2013!! Notebook Check Next week! Review Guide due Friday!! Chemistry Exam Friday!! Schedule: Finish Periodic Table packet!! Due Today for 30 Points!! Objective: I can differentiate between the different states of matter Homework: Study your notes and vocabulary! Chemistry Exam Friday 11/15/2013

Wednesday/Thursday 11/20-11/21 Schedule: Chemistry Unit Review Guide IMPORTANT DATES!! Stamp Sheet due Friday!! Notebook Check TODAY! Review Guide due Friday!! Chemistry Exam Friday!! Objective: I can differentiate between the different states of matter Homework: Chemistry Review Guide due Friday 11/15/2013 for 50 Points Chemistry Exam Friday 11/15/2013

Friday 11/15/2013 Schedule: Objective: Homework: Due Today: If you have not turned in your STAMP SHEET, please do so by the end of the period! Study Guides due Today!! Schedule: Chemistry Exam Today!! Objective: I can differentiate between the different states of matter Homework: No homework today!