Flashcard 1 - Atoms and Molecules

Front

What is an atom?

Back

The basic unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What are subatomic particles?

Back

Particles that are smaller than atoms, including protons, neutrons, and electrons.

Front

What is a proton?

Back

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

Front

What is a neutron?

Back

A subatomic particle of an atom that has no charge.

Front

What is an electron?

Back

A negatively charged subatomic particle that orbits the nucleus of an atom.

Front

What is the nucleus of an atom?

Back

The central part of an atom, made up of protons and neutrons.

Front

How do you calculate the mass of an atom?

Back

The mass of an atom is the sum of the number of protons and neutrons.

Front

What is the meniscus in a graduated cylinder?

Back

The curve at the surface of a liquid in a container, used to measure liquid volume accurately.

Front

What is the atomic number?

Back

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

Front

What is a molecule?

Back

A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.