WorksheetsPractice Midterm Qs Counting Atoms, Balancing, Reaction Type
Total questions: 8
Worksheet time: 26mins
Name
Class
Date
1.
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3 + H2O
a)
Decomposition
b)
Double Replacement
c)
Synthesis
d)
Single Replacement
2.
What type of chemical reaction is this one?
CUO + CO2 --> CuCO3
a)
Decomposition
b)
Double Replacement
c)
Synthesis
d)
Single Replacement
3.
What type of chemical reaction is this one?
Ca + MgCl2 --> CaCl2 + Mg
a)
Decomposition
b)
Double Replacement
c)
Synthesis
d)
Single Replacement
4.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis
b)
Decomposition
c)
Single replacement
d)
Double replacement
5.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
6.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
2
c)
8
d)
24
7.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
a)
1:1:2:1
b)
1:1:1:2
c)
1:2:1:1
d)
2:1:1:1
8.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?
__Ca + __H2O --> __Ca(OH)2 + __H2
a)
2:1:2:1
b)
1:2:1:1
c)
1:2:2:4
d)
1:2:2:1
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