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WorksheetsChemical Reactions Review
Total questions: 10
Worksheet time: 8mins
Which of the following cannot change during a chemical reaction?
the color of the substances
the physical state of the substanecs
the total mass of all of the substances
the odor of the substances
How many total silver (Ag) atoms are present on the product side of this reaction?
4Ag + O2 → 2Ag2O
1
2
3
4
What coefficient is needed in front of Al to balance this equation?
Al + Br2 → AlBr3
1
2
3
4
Which of the following set of coefficients correctly balances the following equation?
(NH4)2CO3 → NH3 + CO2 + H2O
1, 2, 1, 1
2, 1, 2, 1
1, 1, 2, 1
1, 2, 1, 2
Which of the following is a single replacement reaction?
Fe2O3 + H2SO4 → Fe2(SO4)3 + H2O
Al + Br2 → AlBr3
K + CuO → K2O + Cu
C5H12 + O2 → CO2 + H2O
Which of the following best describes a decomposition reaction?
One reactant becoming more than one product
More than one reactant becoming one product
Two ionic compounds exchanging ions with each other to create two new ionic compounds
One substance reacting with O2
The combustion of a hydrocarbon must produce
O2
H2
CO2 and H2O
CO2 and H2
What TWO types of reactions can occur at the same time?
Single replacement and decomposition
Synthesis and double replacement
Decomposition and combustion
Synthesis and combustion
If the following reaction is decomposition, which of the following must be the products?
MgClO3 →
Mg + O2
Cl2 + O2
MgCl2 + O2
Mg + Cl2
What type of reaction is occurring in the equation shown below?
2HBr + Ag2SO3 → H2SO3 + 2AgBr
combustion
single replacement
decomposition
double replacement
