45. Name the cause of change which takes place during the:
(2) conversion of ice into water
(b) conversion of water into hydrogen and oxygen
(c) formation of image of a person on a photographic film
(d) bending of iron rods to make an iron grille.
Answers
Conversion of ice into water
Cause of change is melting of ice
Hope it helps you
Answer:
(2)Condensation, deposition, and freezing are processes that occur as a result of a decrease in the heat energy of water particles. When solid ice gains heat, it changes state from solid ice to liquid water in a process called melting. Ice cubes in a cold drink, for example, gradually melt.
(b)Water splitting is the chemical reaction in which water is broken down into oxygen and hydrogen:
2 H2O → 2 H2 + O2
(c)Photographic film is a strip or sheet of transparent plastic film base coated on one side with a gelatin emulsion containing microscopically small light-sensitive silver halide crystals. The sizes and other characteristics of the crystals determine the sensitivity, contrast, and resolution of the film.
Explanation:
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