Atoms Atoms Atoms

Front

What is the chemical formula for water?

Back

H₂O

Tags

NGSS.MS-PS1-1

Front

How many atoms are in a molecule of water (H₂O)?

Back

3 (2 Hydrogen atoms and 1 Oxygen atom)

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 carry?

Back

Positive charge

Front

What charge does an electron carry?

Back

Negative charge

Tags

NGSS.MS-PS2-3

Front

Where are protons located in an atom?

Back

In the nucleus

Front

What is the mass of a neutron compared to a proton?

Back

Approximately the same, but slightly heavier

Front

What is the role of electrons in an atom?

Back

They are involved in chemical bonding and electricity.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What is an ion?

Back

An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Tags

NGSS.MS-PS1-5

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom of that element.