Chemical Equations Question Preview (ID: 3310)


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What type of reaction is shown in the chemical equation NH3 + HCl ----> NH4Cl
a) decomposition
b) synthesis
c) single displacement
d) double displacement

What type of chemical reaction is shown in the equation 2H2O ----> 2H2 + O2
a) decomposition
b) synthesis
c) single displacement
d) double displacement

Which is the correct balanced equation for BaSO4 + C -----> BaS + CO
a) 2BaSO4 + 4C ------> 3BaS + 4CO
b) BaSO + C ----> BaS + CO
c) BaSO4 + 4C ----> BaS + 4CO
d) BaSO4 + 3C -----> BaS + 3CO

Which is the correct balanced equation for Al + O2 -----> Al2O3
a) 2Al + O3 -----> Al2O3
b) 2Al + 3O2 -----> 2Al2O3
c) Al + O2 -----> AlO2
d) 4Al + 3O2 -----> 2Al2O3

Classify this reaction 4Al + 3O2 -----> 2Al2O3
a) synthesis
b) single displacement
c) double displacement
d) combustion

Classify this equation 4Al + 3O2 ----> 2Al2O3
a) decomposition
b) single displacement
c) double displacement
d) combustion

Aqueous means
a) reacts with water
b) dissolved in water
c) made without water
d) dinking water

In an IcyHot pack, when the pack is cold, a ____________ reaction is taking place
a) endothermic
b) exothermic
c) unbalanced
d) radioactive

After the IcyHot is cold, it becomes hot, because of a(n) ____________ reaction taking place
a) endothermic
b) exothermic
c) unbalanced
d) radioactive

Which is the coefficient in 2HgO4
a) 2
b) Hg
c) O
d) 4

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