Plss
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a substance undergoes a change.
which statement indicates that the change was a physical change?
heat energy was given off.
the substance changed color.
the molecules of the substance changed.
the substance changed shape.

Option (d) is the correct answer.

Explanation:

A change that does not bring any difference in chemical composition of a substance is known as a physical change.

For example, shape, size, density, mass etc are all physical changes.

Change in color is not necessarily a physical change because sometimes color of a substance changes due to chemical reaction.

For example, during rusting color of iron changes.

Whereas a change that brings difference in chemical composition of a substance is known as a chemical change.

For example, reactivity, release or absorption of energy, toxicity etc are all chemical changes.

Thus, we can conclude that the statement substance changed shape was a physical change.