Review /Practice PS Exam Semester 1

Front

The part of the atom that determines the identity of the atom is the ____________.

Back

proton

Front

What is the density of a liquid that has a mass of 27g and a volume of 30ml?

Back

0.9 g/ml

Front

What is matter?

Back

Anything that occupies space and possesses mass.

Front

What type of change occurs when sharpening a pencil?

Back

Physical change

Front

What part of an element and its isotope never changes?

Back

Proton

Front

What is the definition of an element?

Back

A pure substance that cannot be broken down into simpler substances.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the formula for density?

Back

Density = Mass / Volume

Front

What is a physical property?

Back

A characteristic of a substance that can be observed without changing its identity.

Front

What is a chemical property?

Back

A characteristic that can only be observed during a chemical reaction.