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Bars of different metals are all heated to 100°C to determine how their volume and length would be affected. Which statement describes the most likely outcome of this experiment?
1 All of the volumes change and so do their lengths.
2 All of the volumes change, but the lengths remain the same.
3 The volumes and lengths do not change.
4 All of the volumes change the same amount and the lengths remain constant.
All of the volumes change and so do their lengths.
Explanation: Metal expands when heated. Length, surface area and volume will increase with temperature. The scientific term for this is thermal expansion
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