Sugar is made up of clear, colorless crystals that dissolve easily in water, but the crystals and their solution do not conduct electricity. Which statement describes sugar?
Answer
A
It is made up of atoms that are held together by covalent bonds.
B
It is made up of atoms that are held together by weak ionic bonds.
C
It is made up of atoms that are held together by metallic bonds.
D
It is made up of atoms that are held together by strong ionic bonds.
Explanation
Sugar dissolves in water but does not conduct electricity as a crystal or in solution. That means it does not contain mobile ions, as ionic substances do. Sugar is a molecular substance made of atoms held together by covalent bonds, so choice A is correct.
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