Atoms Review

Front

What determines the atomic mass of an atom?

Back

The atomic mass is determined by the number of protons and neutrons in the nucleus.

Front

How many protons does Bromine have?

Back

Bromine has 35 protons.

Front

What are atoms of the same element with different numbers of neutrons called?

Back

They are called isotopes.

Front

What are the horizontal rows on the Periodic Table called?

Back

They are called periods.

Front

Which element has two energy levels and five valence electrons?

Back

Nitrogen has two energy levels and five valence electrons.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

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 atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.