Asked/Added Questions From NCERT:

Question 1. Asked on :05 October 2019:11:15:39 AM

What are the characterstics of the particles of matter?

-Added by Himanshi Verma Science » Is Matter Around Us Pure

Answer:

priyanshu kumar

1) Particles of matter have spaces between them .

2) Particles of matter are continuously moving.

3) Particles of matter attract each other.

-Answered by priyanshu kumar On 05 October 2019:01:06:17 PM

Question 2. Asked on :05 October 2019:11:12:46 AM

What is evaporation?

-Added by Himanshi Verma Science » Is Matter Around Us Pure

Answer:

priyanshu kumar
The phenomenon of change of a liquid into vapours at any temprature below its melting point is called evaporation.

-Answered by priyanshu kumar On 05 October 2019:01:06:50 PM

Question 3. Asked on :21 August 2019:11:04:19 PM

At which the solid and liquid states of substances can exist together?

-Added by Akki chauhan Science » Is Matter Around Us Pure

Answer:

Master Purushottam

0 degree celcius

-Answered by Master Purushottam On 21 August 2019:11:25:29 PM

Question 4. Asked on :21 August 2019:11:01:33 PM

Define condensation.

-Added by Akki chauhan Science » Is Matter Around Us Pure

Answer:

Master Purushottam

The change of solid state into liquid state on cooling. this is called condensation

-Answered by Master Purushottam On 21 August 2019:11:27:27 PM

Question 5. Asked on :14 January 2019:05:43:06 PM

How can we seprate a mixture of salt and Ammonium Chloride?

-Added by Himanshi Verma Chemistry » Is Matter Around Us Pure

Answer:

Master Purushottam
By the process of sublimation

-Answered by Master Purushottam On 24 August 2019:12:02:19 AM

Question 6. Asked on :12 January 2019:10:38:08 AM

What is meant by a substance?

-Added by Rohit Rajput Science » Is Matter Around Us Pure

Answer:

Nishant Verma
Mixtures are constituted by more than one kind of pure form of matter,known as a substance.

-Answered by Nishant Verma On 17 October 2019:02:44:19 PM

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