Question

Give 10 examples of change in colour during chemical reaction with chemical equation..??​

Answer 1

Answer:

Copper reacts with oxygen, H2O and CO2 to give copper carbonate, which changes color from brown to blue or blue green. Rusting, blackening of surfaces of cut vegetables and fruits are other examples of change of color in a chemical reaction.

Explanation:

other answer-

Note: Some other observable characteristics of chemical reaction are,

1) Formation of precipitate: Some chemical reaction forms insoluble solids (precipitates). Example, yellow colored precipitate of lead iodide is formed due to reaction of potassium iodide and lead nitrate.

2) Change of state: In many chemical reactions the formed product possesses a different state than the reactant. For example, burning of wax (solid) produces carbon dioxide (gas) and water (liquid).

3) Change of temperature: Some chemical reactions are characterized by change of temperature such as addition of water to quicklime produces slaked lime and a lot of heat.

Answer 2

Answer:

Hey dude,

Explanation:

Copper reacts with oxygen, H2O and CO2 to give copper carbonate, which changes color from brown to blue or blue green. Rusting, blackening of surfaces of cut vegetables and fruits are other examples of change of color in a chemical reaction

Hope it helps!