Front

What does the atomic mass of an element represent?

Back

The atomic mass represents the average mass of an element's atoms, measured in atomic mass units (amu).

Front

What is the atomic number of an element?

Back

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

Front

What are the three main subatomic particles in an atom?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, malleable, and good conductors of heat and electricity, while nonmetals are usually dull, brittle, and poor conductors.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements chemically bond together.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What are alkali metals?

Back

Alkali metals are highly reactive elements found in Group 1 of the periodic table, such as lithium, sodium, and potassium.