Master AQA GCSE Chemistry Paper 2 | 335 Practice Questions & Answers

AQA GCSE Combined Science Trilogy
- Chemistry - Paper 2 335 Practice
Questions With VERIFIED and Correct
Answers
pure substance - CORRECT ANSWERS-single element, compound or substance not
mixed with another substance

physical processes - CORRECT ANSWERS-mixtures can be separated by...

simple distillation - CORRECT ANSWERS-evaporating water and condensing it in a
separate container

fractional distillation - CORRECT ANSWERS-evaporating liquids with different boiling
points

filtration - CORRECT ANSWERS-screening and sieving to remove solids

chromatography - CORRECT ANSWERS-using a solvent to separate pigments so you
can identify them

crystallisation - CORRECT ANSWERS-evaporating a solution to a small volume and
leaving it to cool to form crystals

chemically bonded - CORRECT ANSWERS-a mixture is made from different
substances that aren't...

a mixture designed for a use - CORRECT ANSWERS-a formulation is...

mixing components in carefully measured amounts - CORRECT ANSWERS-a
formulation is made by...

the solvent moves through the paper - CORRECT ANSWERS-in paper
chromatography...

different compounds to different distances depending on their attraction to the paper
and solvent - CORRECT ANSWERS-chromatography carries...

distance moved by compound ÷ distance moved by solvent - CORRECT ANSWERS-Rf
value =

,single spot in all solvents - CORRECT ANSWERS-in chromatography, a pure
compound produces a...

damp blue litmus paper red and then bleaches it white - CORRECT ANSWERS-chlorine
turns...

glowing splint relight - CORRECT ANSWERS-oxygen gas test makes a...

squeaky pop sound - CORRECT ANSWERS-hydrogen gas test makes a...

limewater go cloudy - CORRECT ANSWERS-carbon dioxide gas test makes...

warmth, shelter, food and transport - CORRECT ANSWERS-the Earth provides humans
with...

food, timber, clothing and fuels - CORRECT ANSWERS-natural resources along with
agriculture give us...

processes to make energy and materials - CORRECT ANSWERS-finite resources
involve...

there is only a certain amount of them - CORRECT ANSWERS-finite means...

using the Earth's resources in a way that can continue in the future. - CORRECT
ANSWERS-sustainable resources involves...

meet the needs of people today without impacting on the needs of people in the future -
CORRECT ANSWERS-sustainable development should...

safe to drink - CORRECT ANSWERS-potable water is...

dissolved salts and microbes - CORRECT ANSWERS-potable water has a low enough
level of...

pure water - CORRECT ANSWERS-potable water isn't...

no other substances - CORRECT ANSWERS-pure water contains...

dissolved salts behind - CORRECT ANSWERS-testing water purity using evaporation:
evaporating water will leave...

solid residue will be left - CORRECT ANSWERS-testing water purity using evaporation:
the purer the water, the less...

100°C - CORRECT ANSWERS-testing water purity using boiling point: pure water will
boil at...

, 0°C - CORRECT ANSWERS-testing water purity using boiling point: pure water will melt
at...

agricultural and industrial processes - CORRECT ANSWERS-chemistry is important in
research to improve...

treat water and make it potable - CORRECT ANSWERS-sterilising agents are used to...

rain water with low amounts of dissolved substances - CORRECT ANSWERS-ground
water is...

ground water - CORRECT ANSWERS-most potable water in the UK is from...

choosing a source, filtering and sterilising the water - CORRECT ANSWERS-potable
water is produced by:

desalination may be used - CORRECT ANSWERS-if fresh water supplies are limited...

removing salt from sea water - CORRECT ANSWERS-desalination involves...

reverse osmosis or distillation - CORRECT ANSWERS-water can be desalinated
using...

lots of energy - CORRECT ANSWERS-water desalination requires...

lots of waste water - CORRECT ANSWERS-city lifestyles and industry produce...

treated before it is released into the environment - CORRECT ANSWERS-waste water
needs to be...

harmful microbes and organic matter - CORRECT ANSWERS-for sewage and
agricultural waste water, you need to remove...

organic matter and harmful chemicals - CORRECT ANSWERS-for industrial waste
water, you need to remove...

pollute waterways - CORRECT ANSWERS-sewage needs to be treated so it doesn't...

remove large objects - CORRECT ANSWERS-treating sewage: screening and grit
removal are used to...

separate sewage sludge and effluent - CORRECT ANSWERS-treating sewage:
sedimentation is used to...