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- 1. Multiple Choice
In an endothermic reaction, energy is _________.
absorbed
released
- 2. Multiple Choice
_____ reactions usually feel hot!
endothermic
exothermic
- 3. Multiple Choice
____ reactions usually feel cold.
endothermic
exothermic
- 4. Multiple Choice
Endo means in or _______.
absorbed
released
- 5. Multiple Choice
Exo means out or ________.
absorbed
released
- 6. Multiple Choice
What instrument would you use to detect an endothermic or exothermic reaction?
triple beam balance
ruler
thermometer
- 7. Multiple Choice'Have you ever eaten sherbet sweets? They fizz in your mouth and your tongue feels cold. Why do you think that is?'It is an exothermic reactionIt is an endothermic reactionIt is made of iceIt is dissolving your mouth
- 8. Multiple Choice
When a candle is lit hydrocarbons are combusting. An exothermic reaction is occuring. Energy is being _________________ .
absorbed
frozen
destroyed
released
- 9. Multiple ChoiceWhich of the following is a sign that a chemical reaction has occurred?change in shapemeltingbubbles of gas appeardissolving
- 10. Multiple ChoiceAfter you mix two substances together, a new substance forms. This is an example of:
Physical ChangeChemical Change - 11. Multiple ChoiceIf a chemical reaction is EXOTHERMIC, the temperature would....Stay the sameIncreaseDecrease
- 12. Multiple ChoiceHCl reacts with Zn giving off heatendothermicexothermic
- 13. Multiple ChoiceSurrounding temperature gets warmerendothermicexothermic
- 14. Multiple ChoiceSurrounding temperature gets coldEndothermicExothermic
- 15. Multiple Choice
Photosynthesis
endothermic
exothermic
- 16. Multiple Choice
Displacement reactions
endothermic
exothermic
- 17. Multiple Choice
Neutralisation reactions
endothermic
exothermic
- 18. Multiple Choice
Dissolving ammonium nitrate
endothermic
exothermic
- 19. Multiple Choice
Which of the following is a sign that a chemical reaction has occurred?
change in shape
melting
there was colour change
dissolving
- 20. Multiple Choice
The initial temperature was measured to be 20oC and the final temperature was 45oC. The reaction was
exothermic
endothermic
- 21. Multiple Choice
The initial temperature was measured to be 20oC and the final temperature was 10oC. The reaction was
exothermic
endothermic
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