ercises
Classify the changes involved in the following processes as physical or
chemical changes
(a) Photosynthesis
) Dissolving sugar in water
(c) Burning of coal
Idi Melting of wax
fe) Beating aluminium to make aluminium foil
) Digestion of food
or falso ነ ት
Answers
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a) Chemical change
b) Chemical change
c) Chemical change
d) Physical change
e) Physical change
f) Chemical change
ADDTIONAL INFORMATION
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Physical change - Change in which are reversible.no new substances are formed.
Chemical change - Changes which are irreversible. new substance are formed with heat and we can not get back the original substance.
Chemical change is also called chemical reaction
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Answer:
a. chemical change
b. Physical change
c. chemical change
d. chemical change
e. physical change
f. chemical change
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