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Worksheets5.1 Endothermic and Exothermic reactions
Total questions: 10
Worksheet time: 5mins
What is meant by thermochemistry?
The study of heat change in a physical reaction
The study of heat change in a chemical reaction
The chemical reaction that involves the release of heat to the surrounding
The chemical reaction that involves the absorption of heat from the surrounding
Which of the following represent exothermic reactions?
Melting
Photosynthesis
Respiration
Neutralisation
What is a measuring device that is suitable to identify endothermic and exothermic reactions?
spring balance
potometer
thermometer
stopwatch
The diagram below shows the characteristics of endothermic and exothermic reactions. What is represented by X?
Heat is released
Heat is absorbed
Involves physical change
Involves temperature change
50ml of sulphuric acid is mixed with 50ml of potassium hydroxide into a polystyrene cup. Which of the following are related to the activity?
The polystyrene cup becomes hot
Heat is released
Reading of the thermometer decreases
An endothermic reaction occurs
Which of the following is an endothermic reaction?
Boiling of water
Rusting of an iron gate
Condensation of water
Photosynthesis
The diagram below shows an experiment to study the change of heat in a chemical reaction. The temperature reading on the thermometer rises. Which of the following is most probably is solution X?
Potassium hydroxide
Lemon juice
Dilute hydrochloric acid
Carbonated drink
Which of the following tool applies the concept of thermochemistry reaction?
Match
Thermos
Calculator
Torchlight
What is the meaning of thermal equilibrium?
The reactant and the product have different temperature
The reactant and the product have the same temperature
When the final temperature of a mixture still vary
When the final temperature of a mixture has become constant
Which of the following reaction releases heat?
Potassium chloride salt with water
Ethanoic acid with sodium carbonate
Hydrochloric acid and potassium hydroxide
Hydrochloric acid and potassium hydrogen carbonate
