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Physical and Chemical Changes

Boiling of mi...

Question

Boiling of milk in a pan is a physical change.

A

True

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B

False

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Solution

The correct option is A True
Physical change: Physical change is a change in which no new substance is formed. There is no change in the chemical properties of the substances only physical properties change.
Explanation: The boiling of milk is also a physical change in which no new substance is formed, only water is boiled-off which can be added again. So, it is a physical change. No changes in the chemical properties are seen.
The given statement that boiling milk is a physical change is true.

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Q. State whether the following statements are true or false. Rewrite the false ones correctly.
(a) All irreversible changes are chemical changes.
(b) A liquid can sublime.
(c) The evaporation of water take place only at 100°C. when it is boiling.
(d) The melting of ice is a physical change.
(e) The souring of milk is a periodic change.
(f) The flowering of trees is a periodic change.
(g) Solidification and condensation are the same.
(h) The breaking of glass tumbler is a chemical change because it is irreversible.
(i) Boiling, evaporation and condensation are physical changes.

Q. When water boils, its molecules start moving faster and many of them escape from water. Is boiling a chemical or a physical change?

Q. [TBQ.X.(3)]
Boiling of water is a physical change; but boiling of egg is a chemical change. Why?

Why is the boiling of eggs a chemical change, while the boiling of water is a physical change?

The boiling of water is a physical change.

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