Atoms, Ions, and Isotopes

Front

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

Back

-2

Front

What subatomic particles would you find in the nucleus of an atom?

Back

Protons and Neutrons

Front

Potassium-39 has how many neutrons?

Back

20

Front

If the mass number of this chlorine atom is 36, how many neutrons does it have?

Back

19

Front

Bromine-80 has how many neutrons?

Back

45

Front

What is an atom?

Back

The smallest unit of matter that retains the properties of an element.

Front

Define ion.

Back

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

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

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 the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.