Question

explain any three characteristics of a chemical change?
longest answer will be marked as brainliest​

Answer 1

Explanation:

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.

Answer 2

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Let's Write characteristics with some of examples

The three characteristics of chemical change are :-

• Burning of wood is a chemical change. Before the wood is burnt, it is hard and brown in colour. After burning, it produces smoke and changes into wood charcoal and ash which are black and powdery.

• Rusting of iron is a chemical change. Iron is grey solid which gets attracted by a magnet. After rusting, the surface of iron gets covered with a brown solid which is not attracted by a magnet.

• Change of milk into curd is a chemical change. Milk is liquid. After curdling, it changes into semi-solid material which has a different taste.

Extra Knowledge :-

• A chemical change is a change in which different properties is formed with new substance.

Examples :-

• Cooking of food

• Growth of plants

• Burning of paper