DC CHEM 1st Semester Review

Front

What is the product of the reaction Mn + _ HNO3 → Mn(NO3)2 + H2?

Back

The blank should be filled with 2.

Front

What type of reaction is Mg + N2 → Mg3N2?

Back

Synthesis (combination) reaction.

Front

What type of reaction is NH3 + HCl → NH4Cl?

Back

Synthesis reaction.

Front

What happens to an atom when it gains electrons?

Back

It becomes negative because it has added electrons.

Front

Identify the type of reaction: Cl2 + 2KI → I2 + 2KCl.

Back

Single displacement reaction.

Front

What is a synthesis reaction?

Back

A reaction where two or more substances combine to form a new compound.

Front

What is a decomposition reaction?

Back

A reaction where a single compound breaks down into two or more simpler products.

Front

What is a single replacement reaction?

Back

A reaction where one element replaces another in a compound.

Front

What is a double replacement reaction?

Back

A reaction where the anions and cations of two different compounds switch places.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.