JML Atoms and Elements Review

Front

What does the atomic number tell us?

Back

The atomic number tells us the number of protons in an atom.

Front

One or two letter abbreviation used to represent an element is called a(n) ________

Back

A chemical symbol.

Front

Particles in an atom's nucleus that are neutral and have no charge are?

Back

Neutrons.

Front

What is the atomic number of Nickel (Ni)?

Back

28.

Front

An atom with atomic number 6 would have how many protons?

Back

6 protons.

Front

What are protons?

Back

Protons are positively charged 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 an element?

Back

An element is a pure substance made of only one kind of atom.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is the atomic mass?

Back

The atomic mass is the average mass of an atom of an element, measured in atomic mass units (amu).