3. State whether the following are physical or chemical
changes. Explain by giving reasons. 1. liquefying of air
Answers
Answered by
2
Answer:
it is a physical change.
Explanation:
it is reversible because only state of the matter is changed also no new substance is formed.
no new properties are observed
Answered by
2
Answer:
physical change.
Explanation:
because when gas (air) changes into water then the water can also change into gas form by heating because physical change is not permanent change.
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