4.4.1.2 Mass Number, Atomic Number and Isotopes

Question 1

What is the charge of atoms and why?

Answer 1

Have same number of protons and electrons so have no charge (electrically neutral)

Question 2

What do all atoms of a particular element have the same of?

Answer 2

same number of protons

Question 3

Atomic number:

Answer 3

number of protons in an atom of an element

Question 4

Mass number:

Answer 4

total number of protons and neutrons in an atom

Question 5

Isotopes:

Answer 5

atoms of the same element with the same number of protons but different number of neutrons so have a different mass number

Question 6

When do atoms turn into positive ions?

Answer 6

atoms turn into positive ions if they lose one or more outer shell eletrons