Question

when liquid gold becomes a solid, its particles get closer together. which best describes what happened to the gold?
○ the conservation of magnetism
○ the change in solubility in a physical change
○ the change in melting point in a physical change
○ the rearrangement of particles in a physical change

Explanation:

1. Analyze each option:

• "the conservation of magnetism": Gold's phase change (liquid to solid) has nothing to do with magnetism conservation. Eliminate this option.
• "the change in solubility in a physical change": Solubility refers to dissolving in a solvent, not phase change of gold itself. Eliminate.
• "the change in melting point in a physical change": Melting point is a property, and here we see particles rearranging (liquid to solid, a physical change) as particles get closer, not a change in melting point. Eliminate.
• "the rearrangement of particles in a physical change": When liquid gold solidifies, it's a physical change (no new substance), and particles rearrange (get closer) as it transitions from liquid (particles more spread) to solid (particles closely packed). This matches.

Answer:

the rearrangement of particles in a physical change