Many substances exist as molecules - Edexcel - GCSE Chemistry - Question 5 - 2012 - Paper 1
Question 5
Many substances exist as molecules.
(a) The diagram shows the outer shell electrons in a molecule of methane, CH₄.
(i) Each hydrogen atom is bonded to the carbon a... show full transcript
Worked Solution & Example Answer:Many substances exist as molecules - Edexcel - GCSE Chemistry - Question 5 - 2012 - Paper 1
Step 1
Give the meaning of the term covalent bond.
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Answer
A covalent bond is a shared pair of electrons between two atoms. This type of bond forms when two atoms come together and share electrons to achieve a full outer shell, resulting in a stable arrangement.
Step 2
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
The correct answer is D: it has a low boiling point.
