UNIT EXAM: Chemical Reactions 2024

Front

The equation AX + BY → AY + BX is the general equation for a ____ reaction.

Back

double replacement

Front

When correctly balanced, the coefficient for Ca(OH)2 in the equation Al2(SO4)3 + Ca(OH)2 → Al(OH)3 + CaSO4 is ____.

Back

3

Front

When correctly balanced, the coefficient for O2 in the equation C2H4 + O2 → CO2 + H2O is ____.

Back

3

Front

Which coefficients correctly balance the equation CaO + H2O → Ca(OH)2?

Back

1, 1, 1

Front

In a ____ reaction, the ions of 2 compounds exchange places, in aqueous solution, to form 2 new compounds.

Back

double replacement

Front

Define a synthesis reaction.

Back

A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products.

Front

Explain a single replacement reaction.

Back

A single replacement reaction is a type of chemical reaction where one element replaces another element in a compound.

Front

What is a combustion reaction?

Back

A combustion reaction is a type of chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.