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WorksheetsReaction types
Total questions: 25
Worksheet time: 13mins
Synthesis reactions always...
involve an element and an ionic compound
form only one product
require oxygen gas
use only one reactant
Which chemical equation correctly represents the decomposition reaction that takes place when ammonia breaks down to form hydrogen gas and nitrogen gas?
N2 + H2 → NH3
NH3 → N + H
NH3 + H2 → N2
NH3 → N2 + H2
Of the balanced chemical equations below, which one most correctly represents a combustion reaction?
2 Mg + O2 → 2 MgO
2 N2 + 3 H2 → 2 NH3
2 CH4 + 4 O2 → 2 CO2 + 4 H2O
CaO + H2O → Ca(OH)2
The chemical equation, KClO3 → KCl + O2, is an example of which type of reaction?
single-replacement
decomposition
combustion
double-replacement
When propane is reacted in the presence of oxygen gas, the products of this combustion reaction are:
CH2 + H2O
C + H2
CO2 + H2
CO2 + H2O
In the following chemical reaction, what product is represented by X?
AlCl3 + NaOH → X + NaCl
AlOH
Al(OH)3
No solution.
Al3OH
Of the reactions below, which one is a double-replacement reaction?
2 Mg + O2 → 2 MgO
2 N2 + 3 H2 → 2 NH3
NH4Cl → NH3 + HCl
Cd(NO3)2 + Na2S → CdS + 2 NaNO3
Which of the following are decomposition reactions?
1.)CH4 (g) + O2 (g) → CO2 (g) + H2O (l)
2.) CaO (s) + CO2 (g) → CaCO3 (s)
3.)Mg (s) + O2 (g) → MgO (s)
4.) PbCO3 (s) → PbO (s) + CO2 (g)
2, 3, and 4
1,2,3 and 4
2 and 3
Only 4
The chemical equation, Cr + Fe(NO3)2 → Fe + Cr(NO3)3, is an example of which type of reaction?
double-replacement
decomposition
single-replacement
combustion
In a decomposition reaction:
one of the reactants is often water
energy in the form of heat or light is often produced
the reactants are usually a metal and a nonmetal
the reactants are generally two ionic compounds in aqueous solution
The chemical reaction: AgNO₃ + NaCl → AgCl + NaNO₃ is a
Synthesis
combustion
double replacement
decomposition
The chemical reaction: Zn + H₂SO₄ → ZnSO₄ + H₂ is a
single replacement
double replacement
synthesis
combustion
The chemical reaction: 2 H₂ + O₂ → 2 H₂O is a
decomposition
combustion
synthesis
double replacement
Which chemical reaction has a skeletal equation: A + BC → B + AC
combustion
double replacement
single replacement
synthesis
The chemical reaction: CH₄ + 2 O₂ → CO₂ + 2 H₂O is a
synthesis
single replacement
combustion
combustion
Palladium can have a charge of +2 or +3
True
False
The chemical reaction: Pb + O₂ → PbO₂ is a
double replacement
single replacement
synthesis
combustion
The chemical reaction: Ca(OH)₂ + H₂SO₄ → CaSO₄ + 2 H₂O is a:
synthesis
combustion
double replacement
single replacement
A group of atoms bonded together.
a coefficient
a subscript
a molecule
a mitochondria
When do multiple reactants combine to form a single product?
synthesis
combustion
single replacement
What is the charge of H, hydrogen?
-290
-1
+1
-9
Which chemical reaction was shown in this experiment?
combustion
synthesis
single replacement
deposition
What chemical reaction is this used with?
combustion
single replacement
double replacement
quadruple replacement
What does the following image represent
combustion
single replacement
double replacement
synthesis
A chemical reaction is a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
True
False
