Matter and Atomic Structure

Front

What does the atomic number represent?

Back

The atomic number tells how many protons are in the nucleus of an atom.

Front

Describe the arrangement of particles in a liquid.

Back

In a liquid, particles are loose and move freely around one another.

Front

Describe the arrangement of particles in a gas.

Back

In a gas, particles are far apart and move in all directions at great speed.

Front

What is a phase of matter with a definite volume and shape?

Back

A solid.

Front

What is a state of matter with a definite volume but no definite shape?

Back

A liquid.

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

Front

What is the smallest unit of an element?

Back

An atom.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.