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- 1. Multiple Choice
In an exothermic reaction, heat is ...
transferred into the system
transferred out of the system
transferred equally between system and surroundings
- 2. Multiple Choice
Exothermic reactions...
Absorb energy
Release energy
Release Odor
Absorb Color
- 3. Multiple ChoiceHave you ever eaten sherbet sweets candy? 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
- 4. Multiple Choice
If an endothermic reaction is occurring in a beaker and you hold it in your hand, it would feel _______.
Warm
Cold
- 5. Multiple Choice
In an endothermic reaction the system is releasing energy.
True
False
- 6. Multiple Choice
The reactants in an exothermic reaction have a __________ energy than the products.
Higher
Lower
- 7. Multiple Choice
Reactants in an endothermic reaction have a __________ energy than the products.
Higher
Lower
- 8. Multiple ChoiceWhich of the following statesments explains the law of conservation of energy?Energy is needed to break chemical bondsAn exothermic reactions releases energyLight energy is released by some exothermic reactionsIn a chemical reaction, energy is neither created nor destroyed, but can change form
- 9. Multiple Choice
Is the reaction endothermic or exothermic?
Endothermic
Exothermic
Isothermic
Nonthermic
- 10. Multiple ChoiceWhich letter represents the activation energy?BECD
- 11. Multiple Choice
Is this reaction endothermic or exothermmic?
Exothermic
Endothermic
Exoendo
Isothermic
- 12. Multiple ChoiceWhat type of reaction is this?EndothermicExothermic
- 13. Multiple ChoiceIn an endothermic reaction the products havemore energy than the reactantsless energy than the reactantsthe same energy as the reactantsno energy
- 14. Multiple ChoiceIn an exothermic reaction the products havemore energy than the reactantsthe same energy as the reactantsless energy than the reactantsno energy
- 15. Multiple Choice
What is the formula to calculate heat energy required to raise the temperature of any substance?
Q=mCp∆T
Q=mTCp
Q= mv
m=QC
- 16. Multiple Choice
What is Specific Heat?
The amount of energy required to increase the temperature of 1g of a material by 1°C.
The amount of energy required to increase the temperature of 1kg of a material by 10°C
The amount of energy required to increase the temperature of 1kg of a material by 1°C.
The amount of friction required to increase the temperature of 1kg of a material by 1°C.
- 17. Multiple ChoiceWhat would be the effect on the particles if more heat is supplied to the system?They would slow downThey would stop movingThey would speed upThere would be no effect
- 18. Multiple ChoiceIn an exothermic process, the surroundings are are gaining energy.TrueFalse
- 19. Multiple Choice
A high specific heat means...
A substance heats up with little energy added
It requires more energy to heat up the substance
- 20. Multiple ChoiceWhat has particularly high specific heat?WaterGasesMetalsPoptarts
- 21. Multiple Choice
For a skillet, used for cooking, do you want a high or low specific heat
High, so that it will need more energy to heat up
Low, so that it will change temperature quickly
- Answer choicesTagsAnswer choicesTags