WOW #12 (Atom)

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are the three main subatomic particles of an atom?

Back

Protons, neutrons, and electrons.

Front

Where is the nucleus located in an atom?

Back

The nucleus is located at the center of the atom.

Front

What charge does a proton have?

Back

A proton has a positive charge.

Front

What charge does an electron have?

Back

An electron has a negative charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the role of electrons in an atom?

Back

Electrons are involved in chemical bonding and determine the atom's reactivity.

Front

What is the mass of a proton compared to an electron?

Back

A proton is approximately 1836 times more massive than an electron.

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 significance of the atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes.