Atomic Structure

Question 1

What is the charge for Protons?

Answer 1

Positive

Question 2

What is the charge for neutron?

Answer 2

Neutral

Question 3

What is the charge for electrons?

Answer 3

Negative

Question 4

What is the nucleus?

Answer 4

Contains protons and neutrons
Middle of atom
Positive charge due to protons
Almost the whole mass of an atom is in the nucleus

Question 5

What are electrons?

Answer 5

Move around nucleus in electron shells

Negatively charged

Question 6

What is the charge of an atom and why?

Answer 6

Neutral - no overall charge

Because the there is an equal charge of protons and electrons

Question 7

Why does an ion not have a neutral charge?

Answer 7

The number of protons doesn’t equal the number of electrons so it has an overall charge
I.e an ion with a 2- charge has two more electrons than protons

Question 8

What does the atomic number tell you?

Answer 8

How many protons an atom has

Question 9

What does the mass number tell you?

Answer 9

Total number of protons and neutrons