Atomic review

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, where elements with similar properties are grouped together.

Front

What is an atom?

Back

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

Front

What are protons?

Back

Subatomic particles found in the nucleus of an atom, with a positive charge and a larger mass than electrons.

Front

What are neutrons?

Back

Subatomic particles found in the nucleus of an atom, with no charge (neutral) and a mass similar to protons.

Front

What are electrons?

Back

Subatomic particles that orbit the nucleus of an atom, with a negative charge and a much smaller mass than protons.

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 the mass number?

Back

The total number of protons and neutrons in an atom's nucleus.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the Law of Conservation of Mass?

Back

A principle stating that mass is neither created nor destroyed in a chemical reaction.

Front

What are alkali metals?

Back

Elements in Group 1 of the periodic table, known for being highly reactive and having one electron in their outer shell.