1. Unit 11: Classification of Chemical Reactions
Cypress Creek HS: Chemistry 1L
Chapter 10

2. Predicting Chemical Reactions
Steps
Determine what type of reaction is being presented
Write the correct formulas for the product(s)
Balance the equation
Example: CaCl2 + Al(OH)3  ?
Double-displacement reaction
__CaCl2 + __Al(OH)3  __Ca(OH)2 + __AlCl3
3CaCl2 + 2Al(OH)3  3Ca(OH)2 + 2AlCl3

3. Predicting Chemical Reactions Practice
Predict the chemical reaction from combining sodium iodide with strontium hydroxide:
2NaI(aq) + Sr(OH)2(aq)  2NaOH(aq) + SrI2(s)
Predict the chemical reaction from combining magnesium and copper (II) sulfate:
Mg(s) + CuSO4(aq)  Cu(s) + MgSO4(aq)

4. Activity Series DECREASING ACTIVITY
Most Active Li Rb K Ca Na Mg Al Mn Zn Fe Ni Sn Pb H2 Cu Hg Ag Pt Au
DECREASING ACTIVITY
This feature is found on your handy helper.
Use it to determine whether a single-displacement reaction will occur (react) or not.
Active metals have a low electronegativity. They bond with nonmetals more readily because they are less stable by themselves.
If a very active metal is competing with a less active metal to bond (with a nonmetal or negatively charged polyatomic ion), the more active metal will “win”.
Think of it as a competing suitors who want to date the same girl!
Least Active

5.     Activity Series DECREASING ACTIVITY Pb + MgSO4  PbSO4 + Mg 
Most Active Li Rb K Ca Na Mg Al Mn Zn Fe Ni Sn Pb H2 Cu Hg Ag Pt Au
DECREASING ACTIVITY
Example #1: Is this combination possible?
Pb + MgSO4  PbSO4 + Mg
Answer: No, because Mg is more active than Pb
Example #2: Is this combination possible?
NaNO3 + K  Na + KNO3
Answer: Yes, because K is more active than Na      
Least Active