Measuring temperature change (Edexcel GCSE Chemistry Combined Science): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What happens to the temperature in an endothermic reaction?
What happens to the temperature in an endothermic reaction?
It decreases
What happens to the temperature in an exothermic reaction?
What happens to the temperature in an exothermic reaction?
It increases
Why is a polystyrene cup placed in a beaker with cotton wool?
Why is a polystyrene cup placed in a beaker with cotton wool?
To limit energy transfer
Why is a lid placed on the cup during the experiment?
Why is a lid placed on the cup during the experiment?
To reduce energy loss via evaporation
How is temperature change calculated?
How is temperature change calculated?
Final temp - starting temp
Why should the mixture be stirred after adding the second reagent?
Why should the mixture be stirred after adding the second reagent?
To make the reaction happen evenly
What type of reaction occurs when ammonium chloride dissolves in water?
What type of reaction occurs when ammonium chloride dissolves in water?
Endothermic
What type of reaction occurs when calcium chloride dissolves in water?
What type of reaction occurs when calcium chloride dissolves in water?
Exothermic
What is true about most neutralisation reactions?
What is true about most neutralisation reactions?
They are exothermic
Which neutralisation reaction is endothermic?
Which neutralisation reaction is endothermic?
Ethanoic acid + sodium carbonate
What type of reaction is zinc powder reacting with copper sulfate?
What type of reaction is zinc powder reacting with copper sulfate?
Displacement, exothermic
What happens when lead (II) nitrate reacts with potassium iodide?
What happens when lead (II) nitrate reacts with potassium iodide?
Precipitation, exothermic