Question

(a) A new substance is always formed in a
le) Burning of a fuel is a ...on change
11. Fill in the blanks.
amico..... change,
46) Melting of ice is a bibi...... Whange
ac) When a candle burns, wax melts, melting of
wax is al... change
(d) Chemical change occurs as a result of
.............. between two substances
(c) heating of water
(d) growing of a piglet into a pig
(e) burning of wood
(passing electric current through a heater's rod
(g) water cycle in nature
ch) respiration in living beings
(i) shaping a piece of glass P
() Revolution of the earth around the sun is a
houidio change
(8) Growing of a seedling into a plant is
slow
...... change
2. State whether the following are physical or
chemical changes
(a) glowing of a bulb P
(b) burning of sugar
с
0) lightning
do dissolving sugar in water
(1) heating a mixture of iron filings and sulphur
cm) mixing oil with water P
(n) cutting wood into small pieces.
(o) photosynthesis
(p) Digestion of food
(a) Melting of wax
(n) Boiling of an egg
(8) Slaking of lime
25
Physical and Chemical Changes​

Answer 1

Chemical change
Chemical change

46)Physical change
Physical change
Chemical reaction
Physical change
Chemical change
Chemical change
Physical change
Physical change
Chemical change
Physical change
Physical change
Chemical change

2)
Physical change
Chemical change
Physical change
Physical change
Chemical change
Physical change
Chemical change
Chemical change
Chemical change
Chemical change
Physical change





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