Atoms

Question 1

Proton

Answer 1

Relative mass, 1

Relative charge, +

Question 2

Neutron

Answer 2

Relative mass, 1

Relative charge, +-

Question 3

Electron

Answer 3

Relative mass, negligible 1/1836

Relative charge, -

Question 4

How to work out number of protons

Answer 4

Atomic no, no of protons
Atomic no, no of electrons
Atomic mass, no of p and n

Question 5

Isotopes

Answer 5

Numbers of protons in same element but different number of neutrons
Different physical properties

Question 6

RAM from isotopes

Answer 6

NeutronsXpercentage

Add figures and divide by 100

Question 7

Arrangements of electrons in first 20 elements

Answer 7

Electron configuration
2,8,8
In pairs