Question

characteristics of occurrence of chemical reaction​

Answer 1

Answer:

Some signs that a chemical change occurred include temperature increase, spontaneous change in color after mixing compounds, a marked odor after the reaction begins, formation of a precipitate in the solution and release of bubbles.

Explanation:

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Answer 2

Answer:

Characteristics of Chemical reactions are:-

• Evolution of a gas.
• Formation of a precipitate.
• Change in colour.
• Change in temperature.
• Change in state.