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Energy Changes by Sid and Eleanor

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Test your knowledge of Chapter 7 in the new GCSE Separate Sciences Chemistry textbook! Have oodles of fun as you quiz away the day!
Eleanor Burnham
Quiz por Eleanor Burnham, atualizado more than 1 year ago
Eleanor Burnham
Criado por Eleanor Burnham aproximadamente 7 anos atrás
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Resumo de Recurso

Questão 1

Questão
In this diagram you can see an arrow with delta H (triangle H) on it. But what does this MEAN?!
Image:
d56bf4dc-59e3-4932-8bea-b1538fcd58cf.gif (image/gif)
Responda
  • Change in horses
  • Change in hats
  • Change in temperature
  • Change in energy

Questão 2

Questão
Which of the following statements is true of exothermic reactions?
Image:
b533ff32-8352-477b-bc4a-7d60e46fa246 (image/jpeg)
Responda
  • Photosynthesis is an example of this.
  • It gives out energy to the surroundings.
  • It make cold.
  • The products have more energy than the reactants.

Questão 3

Questão
Which type of reaction can be used to make an ice pack?
Image:
e2ef4950-fcab-47a8-a907-faf79b8efee4 (image/jpeg)
Responda
  • Exothermic
  • Endothermic
  • Combustion
  • What's a reaction?

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