# Investigation: Exo vs. Endo

This lesson explains how to plan an investigation looking into exothermic vs endothermic reactions.

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!

Q1.What is the law of conservation of mass?

1/5

Q2.Reaction rate graphs: The less steep the curve...

2/5

Q3.What is the total mass of products if the total mass of reactants is 125g?

3/5

Q4.What must all rate practicals measure?

4/5

Q5.Why do we have the highest frequency of successful collisions at the start of the reaction?

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!

Q1.What is the law of conservation of mass?

1/5

Q2.Reaction rate graphs: The less steep the curve...

2/5

Q3.What is the total mass of products if the total mass of reactants is 125g?

3/5

Q4.What must all rate practicals measure?

4/5

Q5.Why do we have the highest frequency of successful collisions at the start of the reaction?

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:

# Investigation

This quiz will assess you on knowledge learned in today's lesson, as well as what you have learned in earlier lessons.

Q1.What must a good method include?

1/5

Q2.What piece of equipment will you need every time you measure the rate of reaction?

2/5

Q3.Where does the independent variable go in a table?

3/5

Q4.What do you need to check for once you have written results in a table before calculating the mean?

4/5

Q5.In endothermic reactions

5/5

Quiz:

# Investigation

This quiz will assess you on knowledge learned in today's lesson, as well as what you have learned in earlier lessons.

Q1.What must a good method include?

1/5

Q2.What piece of equipment will you need every time you measure the rate of reaction?

2/5

Q3.Where does the independent variable go in a table?

3/5

Q4.What do you need to check for once you have written results in a table before calculating the mean?

4/5

Q5.In endothermic reactions

5/5

# Lesson summary: Investigation: Exo vs. Endo

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga