The diagram shows the apparatus used by a pupil when performing an experiment in a school laboratory - Junior Cycle Science - Question (b) - 2009
Question (b)
The diagram shows the apparatus used by a pupil when performing an experiment in a school laboratory.
The pupil blew (exhaled) air into test tube X.
The pupil suck... show full transcript
Worked Solution & Example Answer:The diagram shows the apparatus used by a pupil when performing an experiment in a school laboratory - Junior Cycle Science - Question (b) - 2009
Step 1
i) Name liquid A.
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Answer
The liquid A is limewater.
Step 2
ii) In which test tube, X or Y, did the liquid turn milky?
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Answer
The liquid turned milky in test tube X.
Step 3
iii) Why did liquid A turn milky in one of the test tubes?
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Answer
Liquid A turned milky due to the presence of carbon dioxide (CO₂) in the exhaled air.
Step 4
iv) What conclusion can be made from the result of this experiment regarding the difference in composition between exhaled and inhaled air?
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Answer
The conclusion drawn from the experiment is that there is more carbon dioxide in exhaled air compared to inhaled air.
Step 5
v) Complete the word equation, below, for aerobic respiration.
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