Chemical Reactions Review

Front

What is the activity series in chemistry?

Back

The activity series is a list of metals ranked by their reactivity, used to predict whether a chemical reaction will occur between metals and compounds.

Front

What type of reaction occurs when 4 Fe + 3 O₂ → 2 Fe₂O₃?

Back

This is a synthesis reaction, where two or more reactants combine to form a single product.

Front

During a chemical reaction, what happens to atoms?

Back

Atoms get rearranged; they do not appear or disappear.

Front

What type of reaction is represented by the equation 2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂?

Back

This is a decomposition reaction, where a single compound breaks down into two or more products.

Front

What does the symbol (aq) represent in a chemical equation?

Back

(aq) indicates that a substance is dissolved in water, forming an aqueous solution.

Front

What is a combustion reaction?

Back

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

Front

Define a single displacement reaction.

Back

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

Front

What is the difference between a synthesis and a decomposition reaction?

Back

A synthesis reaction combines reactants to form a single product, while a decomposition reaction breaks down a compound into simpler products.

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.

Front

What is a precipitate in a chemical reaction?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.