Answer part A or part B - Leaving Cert Chemistry - Question k - 2018
Question k
Answer part A or part B.
A
Which of the following gases makes the greatest contribution
to the greenhouse effect?
carbon dioxide water vapour methane
Give the ... show full transcript
Worked Solution & Example Answer:Answer part A or part B - Leaving Cert Chemistry - Question k - 2018
Step 1
A
Which of the following gases makes the greatest contribution to the greenhouse effect?
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Answer
The gas that makes the greatest contribution to the greenhouse effect is water vapour. This is because water vapour is the most plentiful greenhouse gas in the atmosphere and has the highest concentration compared to carbon dioxide and methane. Its abundance significantly influences the Earth's temperature.
Step 2
B
Give an example of (i) a molecular crystal.
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Answer
An example of a molecular crystal is iodine (I₂). Another example can be sucrose (C₁₂H₂₂O₁₁), which is common table sugar.
Step 3
B
Give an example of (ii) a covalent macromolecular crystal.
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Answer
An example of a covalent macromolecular crystal is diamond. Other examples include graphite and silicon (Si).
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