System Experiment

Question 1

What was the title of the experiment?

Answer 1

To investigate carbon dioxide and inhaled air and exhaled air

Question 2

What were the equipment needed in this experiment?

Answer 2

Lime water, two test tubes, two straws

Question 3

What is the hypothesis for this experiment?

Answer 3

I think the test tube with exhaled air will turn milky first due to there being more CO2

Question 4

What is the four step method to the experiment?

Answer 4

1. Place equal volume of lime water into two test tubes
2. Place a straw in each test tube.
3. Breathe in through the straw in test tube A, note the result.
4. Breathe out through the straw in test tube B, note the result

Question 5

Draw the diagram of the experiment

Answer 5

Good job!

Question 6

What are the results of the experiment?

Answer 6

• The lime water in test tube B with (exhaled air) turned to milky first
• the lime water in test tube A with (inhaled air) turned to milky after a while

Question 7

What is the conclusion of the experiment?

Answer 7

I can conclude that there is more carbon dioxide in exhaled air than inhaled air as the line water turned milky first