26. What
are
the
uses
of chamical change?
Answers
Answered by
1
Answer:
The oil industry uses chemical reactions such as cracking of petroleum. The military uses chemical reactions in the gas bomb. Plastic making involves chemical changes with the composition of polymers. Turning fat or oil and alkaline solution into a bar of soap, widely used in soap industry, is a chemical change.
Answered by
1
Answer:
Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.
Examples of Chemical Changes
Burning wood.
Souring milk.
Mixing acid and base.
Digesting food.
Cooking an egg.
Heating sugar to form caramel.
Baking a cake.
Rusting of iron.
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