Atoms

Front

What is an atom?

Back

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

Tags

NGSS.MS-PS1-1

Front

What are the three main subatomic particles of an atom?

Back

Protons, neutrons, and electrons.

Front

What charge does a proton have?

Back

A proton has a positive charge.

Front

What charge does a neutron have?

Back

A neutron has no charge (it is neutral).

Front

What charge does an electron have?

Back

An electron has a negative charge.

Tags

NGSS.MS-PS2-3

Front

How are elements arranged in the modern periodic table?

Back

Elements are arranged by atomic number.

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

How many electrons does neon have in its outer shell?

Back

Neon has 8 electrons in its outer shell.

Front

How many electrons does silicon have?

Back

Silicon has 14 electrons.

Tags

NGSS.HS-PS1-1

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus.