LEAP 2025 Science Grade 8 Practice Questions - LEAP 2025 Science - Grade 8 Exam

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Which statement best describes the difference between a simple molecule like water (H₂O) and an extended crystalline structure like table salt (NaCl)?

Water consists of distinct individual molecules, while table salt forms a repeating 3D lattice of bonded ions. Water consists of thousands of linked monomers, while table salt contains only two bonded atoms. Water forms a rigid solid network at room temperature, while table salt is composed of loose gas molecules. Water molecules are held together by ionic bonds, while table salt crystals are held together by covalent gas bonds.

Correct Answer:

Water consists of distinct individual molecules, while table salt forms a repeating 3D lattice of bonded ions.

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