Give five characteristics of chemical changes
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The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change. Challenge: food cooking, rust formation, tarnish forming on doorknobs, fuel burning for heat, tarnished penny.
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There are five signs of a chemical change:
1. Color Change
2. Production of an odor
3. Change of Temperature
4. Evolution of a gas (formation of bubbles)
5. Precipitate (formation of a solid)
The characteristics of chemical change are-
1.Shape can change the substance .
2.New substance is formed.
3. It is not reversible change.
4. It is a permanent change.
5.The properties of substance are not retain.
Example- Curd from milk.
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