Figure 1 shows the structure of a molecule of each of four compounds, A, B, C and D - Edexcel - GCSE Chemistry - Question 1 - 2023 - Paper 2
Question 1
Figure 1 shows the structure of a molecule of each of four compounds, A, B, C and D.
(a) The formula of a molecule of compound A is H₂O.
Give the formula of a molec... show full transcript
Worked Solution & Example Answer:Figure 1 shows the structure of a molecule of each of four compounds, A, B, C and D - Edexcel - GCSE Chemistry - Question 1 - 2023 - Paper 2
Step 1
Give the formula of a molecule of compound D.
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Answer
The formula of compound D can be determined from its structure, which shows that it contains two hydrogen atoms (H) and one carbon atom (C). Therefore, the formula for compound D is CH₄.
Step 2
Draw one straight line from each name to the structure of a molecule of that compound.
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Answer
For 'carbon dioxide', draw a line to the structure that represents CO₂ (which has a double bond between the carbon atom and the two oxygen atoms).
For 'methane', draw a line to the structure that represents CH₄ (which shows one carbon atom bonded to four hydrogen atoms).
