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- 1. Multiple ChoiceIn an exothermic reaction, heat is ...taken ingiven out
- 2. Multiple ChoiceIn an endothermic reaction, heat istaken ingiven out
- 3. Multiple ChoiceWhat type of reaction occurs in a hand warmer ?exothermicendothermic
- 4. Multiple ChoiceBaking bread and cooking an egg are examples of....?Endothermic processesExothermic processess
- 5. Multiple ChoiceIf a chemical reaction is EXOTHERMIC, the temperature would....Stay the sameIncreaseDecrease
- 6. Multiple ChoiceIn an endothermic reaction the system is releasing energy.TrueFalse
- 7. Multiple ChoiceIs the combustion of gasoline endothermic or exothermic?EndothermicExothermic
- 8. Multiple ChoiceDo reactants in an endothermic reaction have a higher or lower energy than the products?HigherLower
- 9. Multiple ChoiceDo the reactants in an exothermic reaction have a higher or lower energy than the products?HigherLower
- 10. Multiple ChoiceDuring an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______.WarmCold
- 11. Multiple Choice
What happens in an Endothermic reaction?More energy is releasedLess energy is releasedThe substance heats upThe temperature of the substance stays the same - 12. Multiple ChoiceWhat happens in an Exothermic reaction?More energy is releasedLess energy is releasedThe substance's temperature stays the sameThe substance gets colder
- 13. Multiple ChoiceIs photosenthysis an Exothermic or an Endothermic reaction?EndothermicExothermic
- 14. Multiple ChoiceBaking bread and cooking an egg are examples of....?Endothermic processesExothermic processessNone of these
- 15. Multiple ChoiceA student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?The temperature changedIt is an endothermic reactionIt is an exothermic reactionTwo of the answers are correct
- 16. Multiple ChoiceIf they energy required to break the bonds is less than the energy given out by making new bonds the reaction isExothermicEndothermicNeutralisation
- 17. Multiple ChoiceSurrounding temperature gets warmerendothermicexothermic
- 18. Multiple ChoiceWhat type of reaction is shown in the photo?ExothermicIsothermicEndothermicNone of the above
- 19. Multiple ChoiceWhat is true of this reaction?Equal amounts of energy were released and absorbedThe reaction released more energy than it absorbedThe reaction absorbed more energy than it released
- 20. Multiple ChoiceWhat is true of the reaction described below?
Br2 + Cl2 + 30.0 J of energy → 2BrClIt is exothermic because energy was released.It is endothermic because energy is absorbed.It is exothermic because energy is absorbed.It is endothermic because energy is released. - 21. Multiple ChoiceHow do you know that energy is being absorbed during a chemical reaction?Temperature increasesTemperature decreases
- 22. Multiple ChoiceSydnee mixes a solution of baking soda and water. The initial temperature of the solution is 22⁰C. She adds 10mL of vinegar and takes the temperature again. The final temperature is 17⁰C. Which of the following is true?The reaction is exothermicThe reaction is endothermicΔH is negativeThe reaction lost heat to the environment.
- 23. 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
- 24. Multiple ChoiceWhat is the activation energy?The energy of the productsThe energy of the reactantsThe minimum energy needed by the reactants to form the products.The energy lost in the reaction
- 25. Multiple Choice
What is the potential energy of the reactants? The energy readings are top 103, middle 45 and bottom 10
10 kJ
45 kJ
103 kJ
58 kJ
- 26. Multiple Choice
What is the potential energy of the products? The energy readings are top 103, middle 45 and bottom 10
10 kJ
45 kJ
103 kJ
58 kJ
- 27. Multiple Choice
What is the ΔH of the reaction? The energy readings are top 103, middle 45 and bottom 10
35 kJ
- 35 kJ
- 58 kJ
58 kJ
- 28. Multiple Choice
What kind of reaction is this? The energy readings are top 103, middle 45 and bottom 10
Endothermic
Exothermic
Cannot be determined
- 29. Multiple ChoiceWhich letter corresponds to the activation energy of the forward reaction?ABCD
- 30. Multiple ChoiceWhich letter corresponds to the activation energy of the forward reaction?ABCD
- Answer choicesTagsAnswer choicesTags