# Required Practical: Temperature change (Part 2)

This lesson, students will draw conclusions and explain the changes in temperature in experiments. Students will then evaluate the equipment and data and make suggestions for improvements.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

## Question 5

Q1.A student is investigating the effect of changing the concentration of acid on the temperature change when reacting an acid with an alkali. Identify the independent variable.

1/5

Q2.What happens to the temperature of the surroundings when an exothermic reaction occurs?

2/5

Q3.Why is it important to use a polystyrene cup in an experiment where the temperature change is measured?

3/5

Q4.Why is it important to do at least 3 repeats?

4/5

Q5.A student reacted 5 cm³ of nitric acid with 5 cm³ of sodium hydroxide solution. They measured the starting temperature, stirred and measured the maximum temperature reached to work out the change in temperature. They repeated the experiment, changing the concentration of nitric acid each time. What was the dependent variable?

5/5

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

## Question 5

Q1.A student is investigating the effect of changing the concentration of acid on the temperature change when reacting an acid with an alkali. Identify the independent variable.

1/5

Q2.What happens to the temperature of the surroundings when an exothermic reaction occurs?

2/5

Q3.Why is it important to use a polystyrene cup in an experiment where the temperature change is measured?

3/5

Q4.Why is it important to do at least 3 repeats?

4/5

Q5.A student reacted 5 cm³ of nitric acid with 5 cm³ of sodium hydroxide solution. They measured the starting temperature, stirred and measured the maximum temperature reached to work out the change in temperature. They repeated the experiment, changing the concentration of nitric acid each time. What was the dependent variable?

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Required practical - Temperature Change Part 2 -

This quiz will test your knowledge on this lesson and previous lessons in the unit

## Question 6

Q1.In the hypothesis 'Temperature change is affected by the mass of dissolved solid' what is the independent variable?

1/6

Q2.In the practical to investigate temperature change between acid and alkali, why is a polystyrene cup used to carry out the reaction?

2/6

Q3.Why is it a good idea to carry out repeated readings?

3/6

Q4.A good description of a graph or table should include...

4/6

Q5.Why did the temperature increase during the neutralisation reaction?

5/6

Q6.Why was a lid placed on the polystyrene cup during the practical?

6/6

Quiz:

# Required practical - Temperature Change Part 2 -

This quiz will test your knowledge on this lesson and previous lessons in the unit

## Question 6

Q1.In the hypothesis 'Temperature change is affected by the mass of dissolved solid' what is the independent variable?

1/6

Q2.In the practical to investigate temperature change between acid and alkali, why is a polystyrene cup used to carry out the reaction?

2/6

Q3.Why is it a good idea to carry out repeated readings?

3/6

Q4.A good description of a graph or table should include...

4/6

Q5.Why did the temperature increase during the neutralisation reaction?

5/6

Q6.Why was a lid placed on the polystyrene cup during the practical?

6/6

# Lesson summary: Required Practical: Temperature change (Part 2)

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