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Match it! Select the correct answer from the pull down...Good luck!
Which of these represents a properly balanced equation?
single replacement
double replacement
2
BaCO3 - BaO + CO2
The molecules gain more energy and hit the walls of the can more often
2 N2H4 + N2O4 - 3 N2 + 4 H2O
4, 3, 2
Equals the mass of the reactants
AgNO3 + KBr - AgBr + KNO3 What type of reaction is this?
single replacement
double replacement
2
BaCO3 - BaO + CO2
The molecules gain more energy and hit the walls of the can more often
2 N2H4 + N2O4 - 3 N2 + 4 H2O
4, 3, 2
Equals the mass of the reactants
CuS + KCl-CuCl2 +K2S What coefficient of KCl will balance this equation?
single replacement
double replacement
2
BaCO3 - BaO + CO2
The molecules gain more energy and hit the walls of the can more often
2 N2H4 + N2O4 - 3 N2 + 4 H2O
4, 3, 2
Equals the mass of the reactants
When a spray can is thrown onto a fire, it soon explodes. Which statement best describes why this occurs?
single replacement
double replacement
2
BaCO3 - BaO + CO2
The molecules gain more energy and hit the walls of the can more often
2 N2H4 + N2O4 - 3 N2 + 4 H2O
4, 3, 2
Equals the mass of the reactants
A balanced chemical equation reflects the idea that the mass of the products____
single replacement
double replacement
2
BaCO3 - BaO + CO2
The molecules gain more energy and hit the walls of the can more often
2 N2H4 + N2O4 - 3 N2 + 4 H2O
4, 3, 2
Equals the mass of the reactants
Which of the following chemical reactions is a decomposition reaction?
single replacement
double replacement
2
BaCO3 - BaO + CO2
The molecules gain more energy and hit the walls of the can more often
2 N2H4 + N2O4 - 3 N2 + 4 H2O
4, 3, 2
Equals the mass of the reactants
What type of reaction is represented by this equation? NaCl + F2 - NaF + Cl2
single replacement
double replacement
2
BaCO3 - BaO + CO2
The molecules gain more energy and hit the walls of the can more often
2 N2H4 + N2O4 - 3 N2 + 4 H2O
4, 3, 2
Equals the mass of the reactants
Fe + O2 -Fe2O3 What are the coefficients of Fe, O2, and Fe2O3 ?
single replacement
double replacement
2
BaCO3 - BaO + CO2
The molecules gain more energy and hit the walls of the can more often
2 N2H4 + N2O4 - 3 N2 + 4 H2O
4, 3, 2
Equals the mass of the reactants
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