Atomic Structure

Question 1

Isotope

Answer 1

A form of an element that has a different number of protons and neutrons

Question 2

When an element loses an electron

Answer 2

Oxidisation to form a cation

Question 3

When an element gains an electron

Answer 3

Reduction to form an anion

Question 4

Relative atomic mass

Answer 4

Average mass of the atoms of an element compared to 1/12 of the mass of a carbon-12 atom.

Question 5

Abundance

Answer 5

The percentage of a particular isotope of an element found in a natural sample of that element.

Question 6

Formula for relative atomic mass

Answer 6

(mass of isotope × abundance) + (mass of next isotope × abundance) … then divide by 100

Question 7

Groups in periodic table

Answer 7

Arrangement of atoms by the number of electrons in their outer shell. Number of electrons in total increases as you go down

Question 8

Why are groups nearer to noble gases more reactive?

Answer 8

They are closer to getting a full outer shell.

Question 9

Why don’t noble gases react?

Answer 9

They already have a full outer shell.

Question 10

Mnemonic to remember diatomic molecules

Answer 10

Have No Fear Of Ice Cold Beer
Hydrogen, Nitrogen, Fluorine, Oxygen, Iodine, Chlorine, Bromine