3.1 Atomic Structure

Front

What does the word 'atom' translate to in Greek?

Back

Indivisible

Front

Who discovered the nucleus contains positively charged particles called protons?

Back

Ernest Rutherford

Front

What are subatomic particles with a positive charge called?

Back

Protons

Front

What are subatomic particles with a negative charge called?

Back

Electrons

Front

What does the '-131' in Iodine-131 indicate?

Back

Atomic mass.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the nucleus of an atom primarily composed of?

Back

Protons and neutrons.

Front

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

Back

Approximately equal.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus.