Respuesta :

Answer: I would explain it to them by saying changes of state are physical changes in matter. They are reversible changes that do not involve changes in matter's chemical makeup or chemical properties.

Explanation:
Solid—> ice cubes= fixed shape because it’s hard.

Liquid—> water= no fixed shape because it can go everywhere if not contained.

Gas—> steam= no fixed shape because it flouts around.

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