Stuff I Need To Know

Question 1

Hydroxide ion

Answer 1

OH-

Question 2

Nitrate ion

Answer 2

NO3-

Question 3

Carbonate ion

Answer 3

CO3 2-

Question 4

Sulphate ion

Answer 4

SO4 2-

Question 5

Cyanide ion

Answer 5

CN-

Question 6

Phosphate ion

Answer 6

PO4 3-

Question 7

Ammonium ion

Answer 7

NH4 +

Question 8

OILRIG

Answer 8

Oxidation is loss , reduction is gain (of electrons)

Question 9

What is sublimation?

Answer 9

Going straight from solid to gas

Question 10

Relative atomic mass?

Answer 10

Bigger number on periodic table of the element

Question 11

Relative formula mass?

Answer 11

Relative atomic mass added together using numbers of different elements/particles

Question 12

Soluble in water?

Answer 12

Common sodium, potassium and ammonium salts, all nitrates, most chlorides, most sulphates, sodium potassium and ammonium carbonates, sodium potassium and ammonium hydroxides

Question 13

Insoluble in water?

Answer 13

Silver and lead chlorides, lead, baranium and calcium carbonates, most carbonates, most hydroxides

Question 14

Empirical formula mass steps?

Answer 14

Write down element.
Write down grams or percentage
Work out relative atomic mass
Divide mass/percentage by relative atomic mass
Those numbers will determine how many atoms of the element