Atoms and Periodic Table

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?

Back

Protons, neutrons, and electrons.

Tags

NGSS.MS-PS1-1

Front

What charge do protons carry?

Back

Protons carry a positive charge.

Front

What charge do electrons carry?

Back

Electrons carry a negative charge.

Front

What charge do neutrons carry?

Back

Neutrons have no charge (neutral).

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What does the atomic mass represent?

Back

The atomic mass represents the average mass of an atom, taking into account the mass of protons and neutrons.

Front

How many valence electrons does Oxygen have?

Back

Oxygen has 6 valence electrons.

Front

How many valence electrons does Magnesium have?

Back

Magnesium has 2 valence electrons.

Front

What is a dot diagram?

Back

A dot diagram (or Lewis dot structure) represents the valence electrons of an atom.

Tags

NGSS.MS-PS1-1