Question

explain this
a) photosynthesis
b) burning of coal
c) melting of wax​

Answer 1

Explanation:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. .

During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... The plant then releases the oxygen back into the air, and stores energy within the glucose molecules. Chlorophyll. Inside the plant cell are small organelles called chloroplasts, which store the energy of sunlight

Answer 2

Explanation:

1-Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things.

2-Fuels are burnt to produce energy when these fuels burn, the atoms in the fuels combine with oxygen from the air to make new molecules, that is the reason why the burning of coal is a non-reversible chemical change. Coal is burnt mainly from carbon. This burns to produce carbon dioxide.

3-Melting of wax is physical change. In melting of wax, only the state of wax changes from solid to liquid. It is a reversible reaction and no new substance is formed. Burning of candle is both physical and chemical change. When the candle burns, the wax slowly melts which freezes after some time (Physical change).