Question

State two types of physical changes that may take place when a substance is
heated.​

Answer 1

Physical Changes that occur when a substance is heated are :

1) When a substance is heated, its internal energy increases

2) The movement of its particles increases. bonds between particles break when a substance melts or evaporates, or sublimes to form a gas from a solid.

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Answer 2

When a substance is heated, its internal energy increases:

the movement of its particles increases.

bonds between particles break when a substance melts or evaporates, or sublimes to form a gas from a solid.

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