Showing posts with label class9-chemistry. Show all posts
Showing posts with label class9-chemistry. Show all posts

Wednesday 21 March 2012

CBSE-Class 9 - Science - Ch1- Matter In Our Surroundings- Short Q & A #class9-chemistry #eduvictors

Matter In Our Surroundings

CBSE-Class 9 - Science - Ch1- Matter In Our Surroundings- Short Q & A

Q1: Define matter.

Answer: Anything that occupies space and has mass is known as matter.

Q2: What are the characteristics of matter?

Answer:
  • A large number of particles together constitute matter.
  • These particles are of very small size.
  • Particles of matter have spaces among them.
  • Particles of matter are in continuous motion i.e. they possess kinetic energy.
  • Particles of matter attract each other i.e. interparticle forces of attraction or intermolecular forces.
Q3: How matter is classified in terms of physical state?

Answer: solid, liquid and gas.

Q4: How matter is classified in terms of composition?

Answer: element, compound and mixture.

Q5: What are different physical states of matter? Name their properties as well?

Answer: