Atomic Symbols Review

Front

What is the charge of an electron?

Back

Negative charge.

Front

What subatomic particle has a positive charge?

Back

Proton.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

Which particle has a mass greater than an electron?

Back

Proton.

Front

What does the number in the top left corner of an isotope symbol represent?

Back

Mass number.

Front

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

Back

Approximately equal.

Front

What is the role of electrons in an atom?

Back

They are involved in chemical bonding and reactions.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-4

Front

How do you calculate the number of neutrons in an atom?

Back

Subtract the number of protons from the mass number.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.