Chemistry Exam Review

Front

What is sublimation?

Back

A process where a solid turns directly into a gas without becoming a liquid.

Front

Which subatomic particle is negatively charged?

Back

Electron.

Front

What does an atom consist of?

Back

Protons, neutrons, and electrons.

Front

What happens to the properties of elements when they combine to form a compound?

Back

The properties will change when combined to form a compound.

Front

What is the opposite phase of melting?

Back

Freezing.

Front

What is the definition of a compound?

Back

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

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Front

What is the law of conservation of mass?

Back

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

Front

What is an ion?

Back

An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.