Atomic Theory and Atomic Structure

Front

What changes in the atomic structure when an element has different isotopes?

Back

The number of neutrons changes.

Front

In a negative ion, do you have more protons or electrons?

Back

You have more electrons.

Front

What is impossible to know about an electron at any given time?

Back

Its exact location.

Front

What is the overall charge of all atoms (not ions)?

Back

Neutral.

Front

What is the charge of the nucleus of all atoms or ions?

Back

Positive.

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons.

Front

What particle determines the identity of an element?

Back

Protons.

Front

What is the charge of a neutron?

Back

Neutral.

Front

How do you calculate the atomic mass of an element?

Back

By adding the number of protons and neutrons.

Front

What is the maximum number of electrons in the first energy level?

Back

2 electrons.