Atoms, Ions, and Isotopes

Front

An ion with a positive charge has __________.

Back

lost an electron.

Front

Which of the following describes a positive ion?

Back

12 protons, 10 electrons.

Front

Which subatomic particles would repel away from each other?

Back

electrons and electrons.

Front

How many protons are in the following atom? (82 protons)

Back

82.

Front

Atomic mass is __________.

Back

the mass found on the periodic table.

Front

What is an atom?

Back

The basic unit of a chemical element, consisting of protons, neutrons, and electrons.

Front

What is an ion?

Back

An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.

Front

What is an isotope?

Back

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

Front

What is the charge of a neutron?

Back

Neutrons have no charge (neutral).

Front

What is the charge of a proton?

Back

Protons have a positive charge.