1. Ionic vs. Covalent Review Symbols in Equations Translating Equations

2. Common Core Connection
Objectives
Today I will be able to:
Apply ionic and covalent naming rules to naming compounds
Identify symbols commonly used in equations
Identify the 7 diatomic elements
Translate an equation from words to symbols
Informal assessment – monitoring student interactions as they complete the review game and translating practice
Formal assessment – analyzing student responses to the translating practice and exit ticket
Common Core Connection
Build Strong Content Knowledge

3. Lesson Sequence Evaluate: Warm-up
Engage/ Evaluate: Ionic vs. Covalent Naming Review Game
Explain: Symbols in Equations
Elaborate: Translating Equations Practice
Evaluate: Exit Ticket

4. Warm Up What are the 5 pieces of evidence for a chemical change?
Name the following compounds
Mg3(PO4)2
PBr3
CCl4
PbS
Heat energy, light energy, color change, gas emission, formation of a precipitate

5. Warm Up What are the 5 pieces of evidence for a chemical change?
Heat energy
Light energy
Color change
Gas emission
Precipitate formed
Name the following compounds
Mg3(PO4)2 = Magnesium Phosphate
PBr3 = Phosphorus tribromide
CCl4 Carbon tetrachloride
PbS = Lead (II) Sulfide
Heat energy, light energy, color change, gas emission, formation of a precipitate

6. Objectives Today I will be able to:
Apply ionic and covalent naming rules to naming compounds
Identify symbols commonly used in equations
Identify the 7 diatomic elements
Translate an equation from words to symbols

7. Homework
Finish Translating Equations Practice

8. Agenda Warm-up Ionic vs. Covalent Naming Review Game
Symbols in Equations
Translating Equations Practice
Exit Ticket

9. Review

10. How many elements are in the compound Cu(OH)2?

11. 3

12. How can we tell apart different elements?

13. Each new element begins with a capital letter

14. What does the number 4 in NH4 represent?

15. It tells us that there are four hydrogen atoms
This is called a subscript

16. How many atoms are in the compound Mg(C2H3O2)2?

17. 15

18. Symbols in Chemical Equations

19. What is a chemical reaction?
Process of one or more reactants converting to form products with different properties.

20. Ways to Represent Chemical Equations
Using words
Hydrogen (gas) + Oxygen (gas)  water (liquid)
Using symbols
2H2(g) + O2(g)  2H2O(l)
Symbols are a shorthand way to represent an equation

21. What is written on the left side of the equation?

22. Reactants
H2 + O2  H2O

23. What is written on the right side of the reaction?

24. Products
H2 + O2  H2O

25. Coefficient
Determines the quantity of each compound present in a reaction
Written in front of the compound
Example:

26. How is a coefficient different from a subscript?

27. A coefficient tells us how many of each compound are present in a reaction while a subscript tells us how many of each atom there are.

28. What is the coefficient in 4H2?

29. 4

30. What is the subscript in 2NH3?

31. PbCl2(s) HCl(l) H2(g) NaCl (aq) Symbol Example What does it mean? 
2H2 + O2  2H2O
“produces” or “yields”, indicates result of reaction
(s)
PbCl2(s)
Compound is a solid (precipitate)
(l)
HCl(l)
Compound is a liquid
(g)
H2(g)
Compound is a gas
(bubbles)
(aq)
NaCl (aq)
Compound is soluble (dissolves) in water but is a solid when not in a solution
Reaction in which products can reform into reactants, can go both ways

32. Heat is applied, may have word “heat” instead of triangle
Symbol
Example
What does it mean? 
Heat is applied, may have word “heat” instead of triangle
Other conditions (temperature, pressure, etc.) may be indicated here, or below the arrow Δ

33. 7 Diatomic Elements
More Stable for them to exist with 2 bonded together
H2 N2 O2 F2 Cl2 I2 Br2

34. Translating Equation Practice
Practice translating the equations from words to symbols

35. Exit Ticket Translate the following equation:
Solid mercury (II) oxide breaks down when heated, forming the elements mercury and oxygen.
HgO  Hg + O2