Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.

Front

What is the center of an atom called?

Back

The center of an atom is called the nucleus.

Front

How many neutrons does the isotope Carbon-14 have?

Back

Carbon-14 has 8 neutrons.

Front

What are particles that have no charge?

Back

Neutrons are particles that have no charge.

Front

What are particles with a positive charge?

Back

Protons are particles with a positive charge.

Front

What is the charge of an electron?

Back

Electrons have a negative charge.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

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

Front

What is the role of neutrons in an atom?

Back

Neutrons help stabilize the nucleus and prevent protons from repelling each other.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.