Atomic Theory Exam CP Chem 2020-2021 hybrid

Subatomic particles with a positive charge (a)  

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

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

(a)  

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

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

(a)  

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

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

(a)  

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

(a)  

Fix this statement: Neutrons have a negative charge.

(a)  

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

(a)