Atoms

Front

What are the particles in an atom that are neutral and have no charge?

Back

Neutrons are the particles in an atom that are neutral and have no charge.

Front

What are the positive particles of an atom called?

Back

Protons are the positive particles of an atom.

Front

What is all matter made of?

Back

All matter is made of atoms.

Front

Why are old pictures of the atom from science textbooks considered wrong?

Back

They are not drawn to scale.

Front

Why is the overall charge of an atom neutral (0)?

Back

The overall charge of an atom is neutral because they have the same number of protons and electrons.

Front

What is the center of an atom called?

Back

The center of an atom is called the nucleus.

Front

What are the negatively charged particles in an atom?

Back

Electrons are the negatively charged particles in an atom.

Front

What is the mass of a neutron compared to a proton?

Back

A neutron has a mass approximately equal to that of a proton.

Front

What is the atomic number of an element?

Back

The atomic number of an element is the number of protons in its nucleus.

Front

What determines the identity of an element?

Back

The number of protons in the nucleus determines the identity of an element.