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Igcse Chemistry

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Chemical Change & Rate of Reaction – Check yourself

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Chemical Change & Rate of Reaction IGCSE Chemistry check yourself quiz: free practice for IGCSE Chemistry. Work through this Chemical Change & Rate of Reaction IGCSE Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 6.2 Rate of reaction Core — Notes lesson. More practice: IGCSE Chemistry — all units. Syllabus: Cambridge IGCSE Chemistry 0620 syllabus.

1.

Which change increases the rate of reaction?

Increasing the temperature
Using larger lumps of solid
Diluting the solution
Lowering the pressure of gases
2.

Powdered solids react faster than lumps because

they have more mass
they are hotter
they have a larger surface area
they are purer
3.

A catalyst

increases the rate and is unchanged at the end
is used up
slows the reaction
increases the yield
4.

The rate of a reaction producing a gas can be followed by measuring

the volume of gas produced over time
the colour of the gas
the mass of catalyst
the pH only
5.

On a graph of volume of gas against time, a steeper gradient means

a slower rate
more product in total
a faster rate
the reaction has stopped
6.

Increasing the concentration increases the rate because

particles move faster
the activation energy rises
particles collide more frequently
particles are bigger
7.

Increasing the temperature increases the rate because

particles get bigger
the concentration rises
the catalyst works less
particles collide more often and more of them have the activation energy
8.

Rate can be followed by loss of mass when

a solid dissolves
a gas escapes from the reaction flask
a precipitate forms
the solution changes colour
9.

The reaction between marble chips and acid stops when

one of the reactants is used up
the catalyst is used up
the temperature falls
the gas escapes
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