3.3 Calculating and explaining energy change Flashcards Preview

GCSE Chemistry 11L1 > 3.3 Calculating and explaining energy change > Flashcards

Flashcards in 3.3 Calculating and explaining energy change Deck (8)
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1

What are exothermic reactions?

Reactions that transfer energy to the surroundings

2

What are endothermic reactions?

Reactions that take in energy from the surroundings

3

What happens during a chemical reaction?

Energy is transferred to or from the surroundings

4

Combustion is an example of what type of reaction?

Exothermic

5

Thermal decomposition is an example of what type of reaction?

An endothermic reaction

6

In the laboratory, how can you tell if a reaction is exothermic?

There is usually a temperature rise in the solution or the surroundings

7

What name is given to a small metal can used to hold water that is heated by a chemical reaction?

Calorimeter

8

What is the biggest source of error in calorimetry experiments?

Heat loss is the biggest source of error in calorimetry experiments. It is important to use the thermometer carefully, but it is rarely the source of a large amount of error.