Chemistry Paper 2 Revision

On the chromatogram given................................is a mixture.

• red

• orange

• green

• black

A pure substance shows how many spots on a chromatogram?

• 0

• 1

• 2

• 3

How many spots will be produced by a pure substance?

• 0

• 1

• 2

• 3

How many inks are pure?

• 0

• 1

• 4

• 3

Hydrochloric acid

• HCl

• ClH

• HyCl

• HOCl

Salt that is made when magnesium reacts with hydrochloric acid

• magnesium chloride

• magnesium hydride

• magnesium sulfate

• magnesium oxide

Test for hydrogen

• relights a glowing splint

• makes a squeaky pop when lit

• bleaches damp litmus paper

• turns red litmus paper blue

____________________ is the process of separating solids from liquids by passing a mixture through a filter.

• Filtration
• Sifting
• Evaporation
• Floatation

Aluminium is extracted from its ore by

• electrolysis

• chromatography

• heating with carbon

• distillation

What is this separation technique called?

• simple distillation

• sedimentation

• crystallisation

• evaporation