1. Week of January 6

2. Bell Work for January 6, 2019 Directions: Write the sentences and answers on your paper

3. Bell Work for January 7, 2019 Directions: Write the questions and answers on your bell work paper. Your answer doesn’t have to be correct, but at least try to answer the questions.
What do valence electrons do?
What is the difference between an element and a compound?

4. The rest of the answers for yesterday’s worksheet…
There has been a change of plans. I will provide the rest of the answers for the “Review Digital Lesson Worksheet” from yesterday and it will become your notes.
You will receive a copy of the worksheet to keep and write on if you want. When you finish copying the answers show me for a grade. If you were not here yesterday, copy the answers from someone else then show me when you are done (today or tomorrow)

5. Bell Work for January 8, 2019 Directions-Write the answer only on your bell work paper
Explain the difference between a positive and a negative ion.
In a chemical reaction, the chemical bonds can ________ and _____ so that the atoms form a new substance.
The number of valence electrons that an atom has determines how easily it can form ___________ with other atoms.
Atoms can _____, _____, or _____ electrons in their outermost energy levels.

6. Write the following…
Write “Chemical Bonding Review Notes” next to the title “Review Digital Lesson Worksheet”
Write the following notes on the back of the “Review Digital Lesson Worksheet”:
-During a chemical change atoms are not created nor destroyed
-Electrons may be transferred from one atom to another
-Chemical bonds may break or be formed, but the number and type of each atom is conserved

7. Opposites Attract What is an ion?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
Opposites Attract
What is an ion?
An atom has a neutral charge because it has an equal number of electrons and protons.
An ion is a particle with a positive or negative charge.
An ion forms when an atom gains or loses electrons from its outer, or valence, shell.
Copyright © Houghton Mifflin Harcourt Publishing Company

8. Examples of ions

9. How does an ionic bond form?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
How does an ionic bond form?
An ionic bond is a force that brings oppositely charged ions together.
Ionic bonds form when electrons are transferred from a metal atom to a nonmetal atom.
In the process of ionic bonding, valence electrons move from the outer shell of the metal atom to the outer shell of the nonmetal atom.
Copyright © Houghton Mifflin Harcourt Publishing Company

10. How does an ionic bond form?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
How does an ionic bond form?
How are the sodium and chlorine atoms held together in the compound sodium chloride?
Copyright © Houghton Mifflin Harcourt Publishing Company

11. Ionic Bond Introduction Video
Follow the directions below:
Write at least 3 sentences describing what was shown in the video (to prove you have been paying attention)

12. Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most ionic compounds share? (Crystal Lattice Structure)
When ions bond, they form a repeating three-dimensional pattern called a crystal lattice.
Each ion has many oppositely charged ions around it, and every ion is held firmly in place with strong bonds.
It takes a lot of energy to separate these ions from one another. So most ionic compounds have high melting and boiling points.
Copyright © Houghton Mifflin Harcourt Publishing Company

13. What properties do most ionic compounds share?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most ionic compounds share?
Sodium chloride consists of sodium and chloride ions held together in a crystal lattice structure.
Copyright © Houghton Mifflin Harcourt Publishing Company

14. What properties do most ionic compounds share? (Brittleness)
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most ionic compounds share? (Brittleness)
The crystals of ionic compounds are hard and brittle.
Striking a crystal of an ionic compound with a hammer will likely shatter the crystals in many places.
Copyright © Houghton Mifflin Harcourt Publishing Company

15. Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most ionic compounds share? (Electrical Conductivity)
Solid ionic compounds are poor conductors of electric current, because the ions are held tightly in place.
Melting an ionic solid, however, allows the individual ions to move around. Melted ionic compounds can conduct an electric current.
Ionic compounds dissolved in water can also conduct an electric current.
Copyright © Houghton Mifflin Harcourt Publishing Company

16. Formative Assessment 1. What is an ion?
2. How does an atom develop a charge?
3. How does an atom develop a negative charge?
4. How does an atom develop a positive charge?
5. What is a crystal lattice?

17. Ionic Bonding Worksheet (Guided Practice)
You will work on the worksheet provided to you

18. Bell Work for January 9, 2019 Directions-Write the answer only for the question below.
Write 2 facts about ionic bonds or ionic compounds. .

19. Bell Work for January 10, 2019 Directions-Write the questions and answers on your bell work paper.
1. An ionic bond is a bond between __________ and___________.
2. In an ionic bond the valence electrons move from the _________ to the _________.
3. Give an example of an ionic bond using only element symbols from the periodic table.
(examples: NaCl, AlO, LiS)

20. Turn in your homework…
Pass the “Ionic Bond Review Worksheet” (8 questions) to the person at the end of your row so that I may pick it up. If you do not have the worksheet by the time I come to your row, it will be considered late.
Also, make sure the notes from my website are printed or copied by Sunday. (Show me for a homework grade)

21. Warning before playing Kahoot!!
Be sure to:
-Only touch your device (unless you are working with someone)
-Do not cheat (do not look on another device to get the answers)
-Type in your name only, or shorten the names of you and your partner (no “made-up” or created names)
-Get a Kahoot answer sheet from me if you do not have a device or share a device with a classmate who is willing to share with you
-If you must stand to see the screen, stand in the back of the classroom
***If you cannot follow these instructions as a class, we will start on a Brainpop video assignment on Chemical Bonds and Ions.***

22. Questions to think about before “Kahoot”
1. What is the charge of the ion formed by an element in Chlorine? -1
2. What is the charge of the ion formed by Sodium? +1
3. What is the charge of the ion formed by Calcium? +2
4. What is the charge of the ion formed by Phosphorus? -3
5. What is the charge of the ion formed by Sulfur? -2

23. Bell Work for January 13, 2019 Write the question and the answers on your bell work paper
Write 3 things you know about ionic bonds: 1. 2. 3.

24. Let’s Share! What is a covalent bond?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
Let’s Share!
What is a covalent bond?
A covalent bond forms when atoms share one or more pairs of electrons.
When two nonmetal atoms bond, a large amount of energy is needed for either atom to lose an electron. So they bond by sharing electrons.
In a covalent bond, the shared electrons fill empty spaces in the outermost electron shell of each atom.
Copyright © Houghton Mifflin Harcourt Publishing Company

25. Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What is a molecule?
When atoms join together with covalent bonds, they form a type of particle called a molecule.
A molecule is a group of atoms held together by chemical bonds.
A molecule is the smallest unit of a compound that can be identified as that compound.
Copyright © Houghton Mifflin Harcourt Publishing Company

26. Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What is a molecule?
In a water molecule, two hydrogen atoms form covalent bonds with a central oxygen atom.
Copyright © Houghton Mifflin Harcourt Publishing Company

27. Covalent Bond Introduction Video
Write three sentences describing what you saw in the video or three facts (to prove you have been paying attention)

28. What properties do most covalent compounds share? (Low solubility)
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most covalent compounds share? (Low solubility)
Some covalent compounds dissolve in water. Other covalent compounds do not.
Wax molecules have a stronger attraction to other wax molecules than they have to water molecules. This is why wax does not dissolve in water.
Copyright © Houghton Mifflin Harcourt Publishing Company

29. Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most covalent compounds share? (Low melting and boiling points)
When a covalent compound melts or boils, the covalent bonds holding the molecules together do not break as ionic bonds in an ionic compound do.
Instead, one molecule separates from another.
Because molecules separate easily from other molecules, they tend to have lower melting and boiling points than ionic compounds.
Copyright © Houghton Mifflin Harcourt Publishing Company

30. Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most covalent compounds share? (Poor electrical conductivity)
Most covalent compounds are poor conductors of electric current in both solid and liquid form.
Unlike ions, which are charged, molecules are neutral.
So, even in a liquid in which molecules can move around, the compound cannot conduct electric current.
Copyright © Houghton Mifflin Harcourt Publishing Company

31. “Brainpop Video Review Assignment” on Ions and Chemical Bonds
You are going to watch the video first
Then I will pass out the worksheets (DO NOT WRITE ON THE WORKSHEETS)
Put the answers to the questions on your own sheet of loose leaf paper to turn in
Please write “Brainpop Video Review” as the main title
Write “Ions” as the subtitle then number your paper from 1-10
Next, write “Chemical Bonds” as your next subtitle, then number your paper from 1-10

32. Bell Work for January 14, 2019 Directions-Write the answers only for the questions below
What is a covalent bond?
What properties do most covalent compounds share?

33. List the similarities and differences between Ionic and Covalent Compounds Directions-copy the chart on loose leaf paper to turn in
Ionic Compounds
(Differences)
Both
(Similarities)
Covalent Compounds

34. Worksheet – Chemical Bonds: Ionic and Covalent Practice
Write the title colored in red for this assignment on your loose leaf paper to be turned in later
Make 4 columns on the back of your paper: (You don’t have to use a ruler)
1st column title – Compound
2nd column title – Element 1
3rd column title – Element 2
4th column title – Bond Type

35. Bell Work for January 15, 2019 Directions-Write the answers only for the questions below
What is a chemical bond?
Which type of bonding involves atoms of metals and nonmetals? Ionic or Covalent
Which type of bonding involves only atoms of nonmetals? Ionic or Covalent
Which type of bonding involves the sharing of electrons between atoms? Ionic or Covalent
Which type of bonding involves the transfer of electrons from one atom to another? Ionic or Covalent

36. Bell Work for January 16, 2019 Directions-Write the answers only for the questions below
Which type of bonding has a high melting point? Ionic, Covalent, or Both
Which type of bonding has a low melting point? Ionic, Covalent, or Both
Which type of bonding has low solubility in water? Ionic, Covalent, or Both
Which type of bonding has high solubility in water? Ionic, Covalent, or Both
Which type of bonding does not conduct electricity well as a solid? Ionic, Covalent, or Both

37. Bell Work for January 17, 2019 Directions-Write the answers only for the questions below
Give two properties of ionic compounds: Give two properties of covalent compounds:

38. Free to Move How does a metallic bond form?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
Free to Move
How does a metallic bond form?
A metallic bond forms between metal atoms when their outermost energy levels overlap.
Metallic bonding is weak compared to ionic or covalent bonding.
You can think of a metal as being made up of positive metal ions with enough valence electrons “swimming” around to hold the ions together. Electrons are not shared or transferred.
Copyright © Houghton Mifflin Harcourt Publishing Company

39. How does a metallic bond form?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
How does a metallic bond form?
Copper metal is held together by metallic bonding, in which electrons flow around copper ions.
Copyright © Houghton Mifflin Harcourt Publishing Company

40. What properties do most metallic compounds share?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most metallic compounds share?
Because the electrons in a metal can move freely, most metals are good conductors of electric current.
When you turn on a lamp, valence electrons move through the copper wire that connects the light bulb to the electrical outlet.
The valence electrons in the copper atoms are free to move because they are not connected to any one atom.
Copyright © Houghton Mifflin Harcourt Publishing Company

41. What properties do most metallic compounds share?
Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding
What properties do most metallic compounds share?
Due to their free-moving electrons, metals have two properties that allow them to be reshaped.
Malleability is the ability to be hammered into sheets.
Ductility is the ability to be formed into long, thin wires.
Copyright © Houghton Mifflin Harcourt Publishing Company