Question

in addition to formation of new substances, what all changes can be observed during a chemical change? Give one example of each type of change ​

Answer 1

Answer:

• new substances are formed
• energy changes are involved
• there is a change in mass during the reaction
• permanent change takes place .

example : Rusting of iron

hope it helps

Answer 2

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In addition to new products, the following may accompany a chemical change: Heat, light or any other radiation (ultraviolet, for example) may be given off or absorbed. Sound may be produced. A change in smell may take place or a new smell may be given off.