Atomic Structure

Question 1

What are the three sub-atomic particles that make up an atom?

Answer 1

Protons, neutrons and electrons

Question 2

Where are electrons found and what do they do?

Answer 2

Electrons are found in shells which orbit around a Nucleus (Rather like planets around the sun)

Question 3

what are the masses of each sub-atomic particles of an atom?

Answer 3

Proton=1
Neutron=1
Electron=1/1840

Question 4

What are the charges of each sub-atomic particles?

Answer 4

Protons=+1
Neutrons=0 (no charge)
Electron=-1

Question 5

what are the terms for mass number and atomic number?

Answer 5

Atomic= The number of protons in the nucleus of an atom
Mass Number= This is the total number of protons and neutrons in the nucleus of an atom

Question 6

why does an atom have no electrical charge?

Answer 6

There are always the same number of electrons (negative) and proton (positive)

Question 7

how do you work out how many protons, electrons and neutrons are in an atom?

Answer 7

To calculate the number of neutrons :
Mass number - Atomic number
Big number - small number
protons & neutrons= Larger number
protons= Smaller number