Coffin- Flashcard on Intro to Atoms and Molecules

Front

What is the basic unit of matter?

Back

The atom.

Front

What are the three main subatomic particles of an atom?

Back

Protons, neutrons, and electrons.

Front

What charge does a proton carry?

Back

A positive charge.

Front

What charge does an electron carry?

Back

A negative charge.

Front

What charge does a neutron carry?

Back

No charge (neutral).

Front

What is the nucleus of an atom?

Back

The central part of an atom that contains protons and neutrons.

Front

What is an atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is a diatomic element?

Back

A molecule made of two atoms of the same element, such as O2 or H2.

Front

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

Back

Subtract the atomic number from the atomic mass.

Front

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

Back

They have approximately the same mass.