Atomic Theory Exam CP Chem 2020-2021 hybrid

Subatomic particles with a positive charge.....

The overall charge of all atoms (not ions)....

The atom's mass is determined by the number of ( 2 words)

All atoms of a particular element have the same number of these...... ( all atoms of Na for example)

Look at this picture of Argon off the periodic table. How many electrons does it have?

A subatomic particle that has a negative charge is called a(n).......

How many electrons does an element have with a mass number of 40 have?

What is an atom’s nucleus made of? ( 2 words)

Fix this statement: Neutrons have a negative charge.

An gold atom has an atomic mass of 197. Its atomic number is 79. How many neutrons does the iron atom have?