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WorksheetsBalancing Equations and Types of Reactions
Total questions: 16
Worksheet time: 38mins
Two reactants and one product
decomposition
single replacement
synthesis
combustion
CxHy +O2 --> H2O + CO2
decomposition
combustion
single replacement
double replacement
One reactant into two or more products
synthesis
decomposition
single replacement
double replacement
One element replaces another in a compound.
synthesis
single replacement
double replacement
decomposition
Which of the following chemical equations is correctly balanced? More than one answer may be correct.
2 Li + O2 → LiO2
Ag + 2 HCl → AgCl + H2
2 C3H6 + 9 O2 → 6 CO2 + 6 H2O
MgCl2 → Mg + Cl2
Potassium (K) combines with magnesium bromide (MgBr2) to form potassium bromide (KBr) and magnesium (Mg) during a chemical reaction.
Which of the following shows the balanced chemical equation for this reaction?
2K + MgBr >
2KBr + Mg
2K + MgBr2 > 2KBr + Mg
K + MgBr2 >
KBr + Mg
K + MgBr2 > KBr2 + Mg
The chemical reaction shown below shows lead chloride decomposing into lead and chlorine.
PbCl2 Pb + Cl2
Does the chemical reaction shown obey the law of conservation of mass?
No, because a new molecule is produced.
No, because one particle breaks into two particles.
Yes, because the equation is balanced.
Yes, because the number of molecules of Cl2 and atoms of Pb are equal.
What type of reaction equation is represented by the formula below?
AB + CD → AC + BD
combustion
single replacement
double replacement
synthesis
decomposition
What type of reaction equation is represented by the formula below?
A + B → AB
combustion
single replacement
double replacement
synthesis
decomposition
What type of reaction equation is represented by the formula below? AB → A + B
combustion
single replacement
double replacement
synthesis
decomposition
What type of reaction equation is represented by the formula below? AB + C → AC + B
combustion
single replacement
double replacement
synthesis
decomposition
According to the law of conservation of matter, which statement about chemical reactions is true?
Atoms are created by some reactions and destroyed by others.
Energy is created as atoms are destroyed in chemical reactions.
Every atom destroyed in a chemical reaction must be replaced.
Atoms cannot be created or destroyed by chemical reactions.
Balance this equation... H2 + Cl2 --> HCl
It is balanced
H2 + Cl2 --> 2HCl
3H2 + Cl2 --> 6H2Cl
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
4Fe+3O2 --> 2Fe2O3
2Fe + 3O2 -> Fe2O6
4Fe+O6 --> 2Fe2O3
Balance this equation. CF4 + Br2 --> CBr4 + F2
2,1,2,1
1,2,1,2
1,2,2,1
2,2,2,2
Which problem is balanced?
PbO2 + 2H2
SO2 + H20 --> H2SO4
2Na + 2H2O --> 2NaOH + H2
