Question

How can we determined wheather
a
chemical reaction occur are not​

Answer 1

Explanation:

Following are the observations to determine whether the chemical reaction has taken place or not:

Change in colou.

Evolution of gas.

Changee in temperature.

Formation of precipitate.

Change in pH.

Answer 2

Answer:

when chemical reaction is occur new substance is formed

if new product is formed then chemical reaction occurs its simple technique to indentity whether chemical reaction occur or not

Explanation:

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