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Chemistry /GCSE Chemistry 11L1: 3.3 Calculating and explaining energy change

GCSE Chemistry 11L1: 3.3 Calculating and explaining energy change

Chemistry8 CardsCreated 13 days ago

This deck covers key concepts related to energy changes in chemical reactions, focusing on exothermic and endothermic processes, examples, and experimental methods.

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What are exothermic reactions?

Reactions that transfer energy to the surroundings
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Key Terms

Term
Definition
What are exothermic reactions?
Reactions that transfer energy to the surroundings
What are endothermic reactions?
Reactions that take in energy from the surroundings
What happens during a chemical reaction?
Energy is transferred to or from the surroundings
Combustion is an example of what type of reaction?
Exothermic
Thermal decomposition is an example of what type of reaction?
An endothermic reaction
In the laboratory, how can you tell if a reaction is exothermic?
There is usually a temperature rise in the solution or the surroundings
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GCSE Chemistry 11L1: 3.3 Calculating and explaining energy change
TermDefinition
What are exothermic reactions?
Reactions that transfer energy to the surroundings
What are endothermic reactions?
Reactions that take in energy from the surroundings
What happens during a chemical reaction?
Energy is transferred to or from the surroundings
Combustion is an example of what type of reaction?
Exothermic
Thermal decomposition is an example of what type of reaction?
An endothermic reaction
In the laboratory, how can you tell if a reaction is exothermic?
There is usually a temperature rise in the solution or the surroundings
What name is given to a small metal can used to hold water that is heated by a chemical reaction?
Calorimeter
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.