First Semester Test Review--Part 2

Front

What is atomic mass?

Back

The atomic mass of an element equals the number of protons + neutrons.

Front

How many protons are in sodium (Na)?

Back

Sodium has 11 protons.

Front

What does the nucleus of an atom contain?

Back

The nucleus contains protons and neutrons.

Front

What orbits the nucleus of an atom?

Back

Electrons orbit the nucleus of an atom.

Front

What can be determined from the atomic number?

Back

The atomic number indicates the number of protons in 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.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (neutral).