1. Question of the Day Writing a chemical equation: Day 2 5-21
Solid aluminum reacts with oxygen gas to produce solid aluminum oxide (Al2O3).
Equation =
Day

2. FIRST: finish and hand in the handout from yesterday.
Assignment
FIRST: finish and hand in the handout from yesterday.
SECOND: Review section 11.1 and complete #s 7-11 (for #s 9 and 11 complete part a only) on page 354

3. Question of the Day Writing a chemical equation: Day 3 5-22
Solid silver reacts with oxygen gas to produce solid silver oxide (Ag2O).
Equation =
Day

4. Types of Chemical Reactions
Synthesis Reactions
Types of Chemical Reactions
Synthesis reaction – composition reaction – 2 or more substances combine to form a new compound
A + B AB
A and B = eles. Or cmpds.
AB = cmpd.
Example # 1: 2H2(g) + O2(g) H2O(g)
A B AB

5. Types of Chemical Equations
Synthesis Reactions
A and B = eles. Or cmpds.
AB = cmpd.
Example # 2: 2H2SO3(aq) + O2(g) H2SO4(aq)
A B AB
Example # 3: CaO(s) + SO2(g) CaSO3(s)
A B AB

6. Types of Chemical Equations
Synthesis Reactions
Examples:
an element reacts with oxygen to form an oxide
most metals react with halogens to form cmpds.
oxides of active metals react with water to produce metal hydroxides
certain metal oxides and nonmetal oxides react to form salts

7. Types of Chemical Equations
Synthesis Reactions
Synthesis reactions always have ...
1 product that must be a compound

8. Types of Chemical Equations Decompostion Reactions
decomposition reaction – single compound undergoes a reaction that produces 2 or more simpler subs. – usually require addition of energy (heat or electricity)
AB A + B
A and B = eles. Or cmpds.
AB = cmpd.
Example: 2H2O(l) H2(g) + O2(g)
electricity
AB A B

9. Decompostion Reactions Types of Chemical Equations
Examples:
electric current to a binary compound producing its elements
Great example = ____________
electrolysis
Basically the opposite of synthesis rxns.

10. Types of Chemical Equations Decompostion Reactions
Electrolysis –
decpomposition of
a substance by an
electrical current

11. Types of Chemical Equations Decompostion Reactions
Decomposition reactions always have ...
1 reactant that must be a compound

12.  MAKE SURE you hand in before you leave!!!
Assignment
From yesterday: Review section 11.1 and complete #s 7-11 (for #s 9 and 11 complete part a only) on page 354
 MAKE SURE you hand in before you leave!!!

13. NaCl(s) + F2(g)  NaF(s) + Cl2(g
Day
Q Of The Day
Balance the following chemical reaction AND answer the questions below:
NaCl(s) + F2(g)  NaF(s) + Cl2(g
a. sodium chloride = what state of matter
b. What is produced (BOTH!)?

14. Practice
Use the following chemical reaction to answer the questions below:
2Al2S3(aq) Al(s) + 3S2(g)
a. aluminum sulfide = what state of matter
b. What does the 3 in front of sulfur tell you?
c. What is produced (BOTH!)?
electricity

15. Review
What is a synthesis reaction?
What is a decomposition reaction?

16. Types of Chemical Equations Single-Replacement Reactions
Single-replacement reaction OR displacement reaction – one element replaces a similar element in a compound.
A + BX AX + B
Y + BX BY + X
A, B, X, and Y = eles.;
AX, BX, and BY = cmpds.
Example: Fe(s) + CuSO4(aq) FeSO4(aq) + Cu(s)
A BX AX B

17. Types of Chemical Equations Single-replacement Reactions
Examples:
a metal with another metal
H in water with a metal
H in an acid with a metal
Halogens ***

18. Types of Chemical Equations Single-replacement Reactions
Single replacement reactions always have ...
2 reactants and 2 products
1 of each is an element

19. Review single replacement synthesis synthesis decomposition
X + BY  Y + BX
reaction type = _______________________
X + BY  BYX
X + Y  XY
BY  Y + B
single replacement
synthesis
synthesis
decomposition

20. Day
Q Of The Day
Balance each of the following chemical reactions AND explain what type of reaction it is:
a. NaHCO3(s) Na2CO3(s) + H2O(l) + CO2(g)
b. F2(g) + AlCl3(s)  AlF3(aq) + Cl2(g) 2
heat
decomposition 3 2 2 3
single replacement

21. Go to wiki and click links – shssci.wikispaces.com:
(7 questions at beginner and 7 at intermediate in 12 tries each)
- bonus

22. Question of the Day What happens during a … synthesis reaction
decomposition reaction
single replacement reaction

23. Go to wiki and click links – shssci.wikispaces.com:
(10 questions at beginner and 10 at intermediate in 15 tries each)
- bonus

24.
- bonus