Front

What is the chemical formula of dinitrogen tetroxide?

Back

N₂O₄

Front

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

Back

Decomposition

Front

What is the name of the acid with the formula HCl?

Back

Hydrochloric acid

Front

What is a mixture that is NOT evenly distributed called?

Back

Heterogeneous

Front

What type of change occurs when cutting a piece of paper in half?

Back

Physical

Front

Define a molecular (covalent) compound.

Back

A compound formed by the sharing of electrons between nonmetal atoms.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.

Front

What is the definition of a homogeneous mixture?

Back

A mixture that has a uniform composition throughout.

Front

Give an example of a chemical reaction that is a synthesis reaction.

Back

2H₂ + O₂ → 2H₂O (Formation of water from hydrogen and oxygen).

Front

What is the general formula for a decomposition reaction?

Back

AB → A + B (A compound breaks down into simpler substances).