Atoms and the Periodic Table

Front

What is the mass number of an element?

Back

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

Front

How do you calculate the number of neutrons in an atom?

Back

Number of neutrons = Mass number - Number of protons.

Front

What particles are found in the nucleus of an atom?

Back

Protons and neutrons.

Front

What are subatomic particles?

Back

Subatomic particles are the particles that make up an atom, including protons, neutrons, and electrons.

Front

How many protons does Beryllium have?

Back

Beryllium has 4 protons.

Front

What is an electron?

Back

An electron is a negatively charged subatomic particle that orbits the nucleus of an atom.

Front

What is a proton?

Back

A proton is a positively charged subatomic particle found in the nucleus of an atom.

Front

What is a neutron?

Back

A neutron is a neutral subatomic particle found in the nucleus of an atom.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What does it mean for an element to be reactive?

Back

A reactive element readily undergoes chemical reactions, often by losing, gaining, or sharing electrons.