Question

I will follow and mark you as Brainlist if you ans Changes Around Us
Answer the following questions:- (20-30 words)
Q1. Explain one measure difference between physical and chemical
changes.
Q2. Name one application of expansion on heating and contraction on
cooling
Q3. What are the causes of changes.
Note:- Please don't cross the given word
limit.​ please ans i have to summit it today

Answer 1

Answer:

1) Physical changes only change the apperance of a substance not its chemical composition

chemical changes cause a substance to change in a entirely new substance with the new chemical formula

2) One application of expansion on heating and contraction on cooling is the working of a liquid thermometer

3) Physical changes are caused by forces like motion,wind, temperature etc. but chemical changes are caused by temperature, concentration,surface area, pressure etc.

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Answer 2

Answer:

1. Physical changes are reversible whereas chemical changes are non reversible
2. contraction and expansion of iron wheel
3. Causes of changes includes it's Chang ng physical and chemical property

Explanation:

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