Question

CHEMISTRY
State two ways by which a change can be brought about.
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Answer 1

Answer:

Explanation:

changes can be brought by two types

• physical change and chemical change

• physical change:
• these reactions are reversible
• melting of ice,boiling of gold

•    chemical change:
• it is irreversible reaction
• identified by change in colour,taste,smell
• setting of curd,spoiling of food

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