S1 Chemical Reactions End of Unit Test

Which of the following is classed as a physical change?

• Temperature rise

• Colour change

• Ice melting

• Gas being given off

An exothermic reaction is when the temperature of a reaction increases?

• True

• False

During an endothermic reaction the temperature decreases during the reaction?

• True

• False

In the summer, the Eiffel Tower is....?

• Bigger than in the winter because it contracts

• Smaller than in the winter because it contracts

• Bigger than in the winter because it expands

• Smaller than in the winter because it expands

Which reaction would be the fastest?

• Burning a tree trunk

• Burning a wooden splint

• Burning wood shavings

• Burning a forest of trees

Sarah used 10 grams of a catalyst in an experiment. How much of it would have been used up?

• 5 grams

• 7.5 grams

• 10 grams

• 0 grams

Which reaction would be the fastest?

• A

• B

• C

• D

Which of the following would NOT increase the rate of a reaction?

• Increasing the temperature

• Increasing the concentration

• Increasing the particle size

• Decreasing the particle size

Ice melts at what temperature in degrees celcius?

• 50

• 80

• 100

• 0

Water boils at what temperature in degrees celcius?

• 85

• 95

• 105

• 100