Structure of Atoms & Isotope Symbols

Front

What is the basic unit of matter?

Back

An atom.

Front

What particles are found in the nucleus of an atom?

Back

Protons and neutrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

How do you determine the number of protons in an atom?

Back

The atomic number of the element.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

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

Back

Mass number - Atomic number.

Front

In a neutral atom, how do the number of protons compare to the number of electrons?

Back

They are equal.

Front

What happens to the number of electrons in a positive ion?

Back

It has fewer electrons than protons.