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Worksheets8.1b.Physical and chemical changes.15MCQ
Total questions: 15
Worksheet time: 8mins
Which one of these is typical of a physical change and not a chemical change?
Emits light
Easy to reverse
Smell given off
Colour change
Gas released
Which change of state occurs when liquid water reaches 100oC?
Boiling
Evaporation
Condensation
Freezing
Sublimation
Which change of state occurs when steam reaches 100oC?
Boiling
Evaporation
Condensation
Freezing
Sublimation
What happens to the bonds between particles when a liquid boils?
They are broken
They get stronger
They double
They release energy
They release gas
Stones sink in water because they are...
More dense
Heavier
Solid
Colder
Smaller
What always happens during a chemical reaction?
Gas given off
Heat given off
Light given off
Changes colour
Atoms rearrange
Exothermic reaction where glucose + oxygen → carbon dioxide + water
Respiration
Neutralisation
Thermal decomposition
Displacement
Photosynthesis
Particle diagram for a liquid?
Which two states of matter can be found when a substance is boiling?
Solid
Liquid
Gas
Vacuum
Plasma
Which two states of matter can be found when a substance is freezing?
Solid
Liquid
Gas
Vacuum
Plasma
Which heating curve has labelled the point where a substance can be found as both solid and liquid?
Change of state straight from solid → gas?
Boiling
Evaporation
Condensation
Freezing
Sublimation
Which temperature is closest to normal room temperature?
0 oC
10 oC
20 oC
37 oC
100 oC
Alcohol has a freezing point of -100 oC and a boiling point of 78 oC. What state of matter will it be at 25 oC?
Solid
Liquid
Gas
Vacuum
Plasma
Mercury has a freezing point of -39 oC and a boiling point of 356 oC. What state of matter will it be at 25 oC?
Solid
Liquid
Gas
Vacuum
Plasma
