Atoms Review

Front

What is the nucleus of an atom made of?

Back

The nucleus is made of protons and neutrons.

Front

How many electrons does potassium (K) contain?

Back

Potassium contains 19 electrons.

Front

Which colored particle is the electron?

Back

The electron is represented by the color blue.

Front

How many electrons can the innermost shell of an atom hold?

Back

The innermost shell can hold 2 electrons.

Front

What type of particle floats around the nucleus with a negative charge?

Back

The particle that floats around the nucleus with a negative charge is the electron.

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 is an electron?

Back

An electron is a negatively charged particle that orbits 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.

Front

What is the mass number?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.