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In Course: GCSE Chemistry (AQA): Paper 1

AQA GCSE Chemistry: Required Practical - Investigating Temperature Changes

Covers the method for investigating variables that affect temperature changes in reacting solutions, such as neutralisation. Includes how to measure temperature change accurately and reduce heat loss.
A dramatic, cinematic close-up photograph of a hand gently stirring a liquid inside a white polystyrene cup, which is nested within a clear glass beaker. A laboratory thermometer is immersed in the liquid, its mercury column visibly rising, and a subtle, warm glow or wisp of steam emanates from the solution, suggesting an exothermic reaction. The background is a softly blurred laboratory setting, emphasizing the focus on precision and heat transfer.

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Deck Contents

24 Cards
Lesson#1
Welcome to this deck on the required practical for investigating temperature changes in reacting solutions. We'll explore a method using a neutralisation reaction, identify the different types of variables, and learn how to make the experiment as accurate as possible. This is a key practical for understanding energy changes in chemistry.
Quiz#2
In chemistry, what is the general name for a reaction that releases energy into the surroundings, usually as heat?

exothermic

Quiz#3
In an exothermic reaction, does the temperature of the solution increase or decrease?

increase

Lesson#4
The main challenge in this experiment is to measure the temperature change accurately without losing heat to the surroundings. To do this, we use a polystyrene cup as a reaction vessel. Polystyrene is a good thermal insulator. For safety and stability, the cup is usually placed inside a glass beaker, and a lid is placed on top to reduce heat loss from the surface.
Quiz#5
In the required practical for temperature changes, what piece of apparatus is used as the reaction vessel to reduce heat loss?

polystyrene cup

Quiz#6
In the temperature change practical, why is the polystyrene cup often placed inside a glass beaker?

for stability

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