lesson 1

Question 1

What are the contents of the two test tubes used in the demonstration? **
Answer:

Answer 1

*Test Tube1**hydrogen peroxide
- Test Tube 2 : magnesium peroxide

Question 2

Which test tube acted as the CONTROL for this experiment?

Answer 2

The test tube containing only hydrogen peroxide acted as the control.xxxx

Question 3

*How did you measure the rate of the reaction?**

Answer 3

By using a ruler to measure the height of the foam produced.

Question 4

What effect does a catalyst have on a chemical reaction?*

Answer 4

A catalyst speeds up the reaction

Question 5

*What information does the CONTROL test tube provide?

Answer 5

It tells us that without a catalyst, there is far less reaction.

Question 5

*What is important about the state of the catalyst at the end of the reaction?

Answer 5

they are renewable

Question 5

What are enzymes made of?

Answer 5

All enzymes are made of PROTEIN molecules.

Question 6

Why are catalysts essential for living organisms?*

Answer 6

Without these catalysts, reactions in cells would happen too slowly for life to exist.

Question 7

*What waste product do all living things produce?**xxxxxx

Answer 7

All living things produce hydrogen peroxide (H₂O₂) as a waste product

Question 8

What do living organisms produce to speed up the breakdown of hydrogen peroxide?**

Answer 8

Living organisms produce CATALASE to speed the breakdown of hydrogen peroxide in enzymes and digestion