Question

Is it chemical change or physical change? give reasons.
a a glass bottle breaking
b butter and sugar being made into toffee
c cotton being woven to make sheets
d coal burning in air​

Answer 1

$\bold \pink{ANSWER}$

a) Breaking glass is an example of a physical change because if you break it, it is still glass. It didn't change to another substance.

b)The butter and cheese will melt, but because they are mixtures of substances (water, fats, milk solids) the melting point is not clean and they tend to separate out somewhat. ... The sugar caramelises to form a toffee, which is a chemical burning reaction.

c) physical change because "Has not changed Material Composition and properties"

d)Burning of coal is a chemical change. When coal is burnt, the chief component, carbon is changed to carbon dioxide. This process cannot be reversed.

Answer 2

Answer:

a) Physical change

b) Chemical change

c) Physical change

d) Chemical change

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