Matter Review

Front

What is a physical change?

Back

A change that affects the size, shape, or state of matter of a substance, but doesn't affect its chemical composition.

Front

Which one is a compound?

Back

H₂O (Water)

Front

What is a pure substance?

Back

Has uniform and definite composition. Contains only one element or compound.

Front

What is an element?

Back

A single type of atom such as Fe (iron).

Front

What happens to particles in a solid as they cool down?

Back

They slow down and condense.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is the difference between a homogeneous and heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition, while a heterogeneous mixture has a non-uniform composition.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.