Front

What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.

Back

atom

Front

What are any of the various self-contained units of matter or energy that are fundamental parts of all matter, including electrons, protons, and neutrons?

Back

subatomic particles

Front

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

Back

proton

Front

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

Back

neutron

Front

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

Back

electron

Front

What is the center of an atom containing protons and neutrons?

Back

nucleus

Front

Which subatomic particles are found in the nucleus of an atom? Options: Protons and Electrons, Protons and Neutrons, Neutrons and Electrons, Protons, Neutrons and Electrons

Back

Protons and Neutrons

Front

What electrical charge does a proton have?

Back

+1

Front

What mass does a neutron have?

Back

1 amu

Front

Complete the missing label on the diagram.

Back

Nucleus