Question

name five condition for a chemical reaction. support your answer by the least one example each?​

Answer 1

Explanation:

1. change in color-

eg-  when lead nitrate is added to potassium sulphate , the precipitate so  formed is in yellow in color.

2. change in state

eg- when magnesium ribbon[ which is in a solid form ] is heated fumes are involved  also forming mg oxidewhich is in powder form.

3. change in temperature

eg-when cu powder is heated it becomes hot and turns black.

4. evolution of gases

eg- when lead nitrate powder is heated there is an evolution of brown fumes [ gas ].

5. formation of precipitate

eg-( use the i mentioned in 1st point)

hope it helps

thanks