Reaction Remix Worksheet
Reaction Remix
Chemical Equations & Classification
Name:
Date:
Instructions
1. Balance each equation using lowest whole-number coefficients. 2. Classify as: Synthesis, Decomposition, Single Replacement, Double Replacement, or Combustion.
| # | Chemical Equation | Reaction Type |
|---|
| 1 | ____ H2(g) + ____ O2(g) → ____ H2O(l) | |
| | |
| 2 | ____ KClO3(s) → ____ KCl(s) + ____ O2(g) | |
|
| 3 | ____ CH4(g) + ____ O2(g) → ____ CO2(g) + ____ H2O(g) |
|
| 4 | ____ Zn(s) + ____ HCl(aq) → ____ ZnCl2(aq) + ____ H2(g) |
|
| 5 | ____ AgNO3(aq) + ____ NaCl(aq) → ____ AgCl(s) + ____ NaNO3(aq) |
|
| 6 | ____ C3H8(g) + ____ O2(g) → ____ CO2(g) + ____ H2O(g) |
|
| 7 | ____ Al(s) + ____ CuSO4(aq) → ____ Al2(SO4)3(aq) + ____ Cu(s) |
|
| 8 | ____ NaOH(aq) + ____ H2SO4(aq) → ____ Na2SO4(aq) + ____ H2O(l) |
|
| 9 | ____ Fe(s) + ____ O2(g) → ____ Fe2O3(s) |
|
| 10 | ____ CaCO3(s) → ____ CaO(s) + ____ CO2(g) |
|
Challenge Question
Why is it important to use the lowest whole-number coefficients when balancing chemical equations?
Reaction Remix Slides
Reaction Remix
Classifying and Balancing Chemical Changes
The Reaction Gallery
Synthesis
A + B → AB
Building blocks combine.
Decomposition
AB → A + B
Breaking apart into pieces.
Combustion
Fuel + O2 → CO2 + H2O
Rapid oxidation & energy.
Single Replacement
A + BC → AC + B
One element swap.
Double Replacement
AB + CD → AD + CB
Ions trade partners between two compounds.
The Laws of Balancing
1
No Subscript Surprises
Only change coefficients. Changing subscripts changes the chemical identity!
2
Polyatomic Power
Treat polyatomic ions as indestructible units if they remain unchanged.
Challenge Problem
__ Al + __ CuSO4 → __ Al2(SO4)3 + __ Cu
Skeleton Inventory (Left)
- Aluminum (Al): 1
- Copper (Cu): 1
- Sulfate (SO4): 1
Skeleton Inventory (Right)
- Aluminum (Al): 2
- Copper (Cu): 1
- Sulfate (SO4): 3
Quick Fire Check 1
CH4 + 2O2 → CO2 + 2H2O
Reaction Type?
2Fe + 3Cl2 → 2FeCl3
Reaction Type?
Quick Fire Check 2
CaCO3 → CaO + CO2
Reaction Type?
Zn + 2HCl → ZnCl2 + H2
Reaction Type?
The Big Remix
AgNO3 + NaCl → AgCl + NaNO3
Classify It!
