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Expansion and contraction
Lower Sec Science · Secondary 2 · Hard · Expansion and contraction
A metal ball and a glass ball of the same size are both heated from 20 °C to 80 °C. The metal ball expands more than the glass ball. Which statement best explains this observation?
- Metal particles gain more energy and move further apart than glass particles.
- Glass particles gain more energy and move further apart than metal particles.
- Only metals expand when heated; glass does not expand at all.
- The metal ball absorbs no heat, so it must expand more.
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