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Question
Seawater does not freeze easily when compared to pure water. Why? [2 MARKS]
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Solution
Explanation: 2 Marks
When freshwater freezes, water molecules of hydrogen and oxygen bond together into a crystalline form called ice. In seawater, the presence of salt makes it harder for water molecules to bond to the ice structure because ice naturally repels salt molecules. So in a sense, the salt gets in the way of water molecules, blocking them from joining together to form ice.
When freshwater freezes, water molecules of hydrogen and oxygen bond together into a crystalline form called ice. In seawater, the presence of salt makes it harder for water molecules to bond to the ice structure because ice naturally repels salt molecules. So in a sense, the salt gets in the way of water molecules, blocking them from joining together to form ice.
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