Are fermentation of sugar, beating of metals into wire, shaping of glass by heat, and digestion of food, a chemical change or a physical change ???
Answers
fermentation of sugar,
It's a chemical change. Micro-organisms need glucose to power their bodies - and they convert each molecule of sugar into carbon dioxide and ethanol…which is the alcohol found in wine and
beating of metals into wire is physical change because The conversion of metals into sheets involves non chemical reaction and sheets can be easily reconverted into metals with some external conditions. So, it is reversible. shaping of glass is physical change ,digestion of food is chemical change
Answer:
(a) Photosynthesis → Chemical change
(b) Dissolving sugar in water → Physical change
(c) Burning of coal → Chemical change
(d) Melting of wax → Physical change
(e) Beating aluminium to make aluminium foil → Physical change
(f) Digestion of food → Chemical change
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