1.

If two substances are brought in contact, it will result in(a) a physical change only.(b) a chemical change only.(c) either a physical change or a chemical change, depending on the conditions.(d) a chemical change if they are heated together otherwise, a physical change.

Answer» If two substances are brought in contact, it will result in

(a) a physical change only.

(b) a chemical change only.

(c) either a physical change or a chemical change, depending on the conditions.

(d) a chemical change if they are heated together otherwise, a physical change.


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