Matter in our surroundings

With the increase in the temperature kinetic energy of the particles-

• Increases

• Decreases

• Remains the same

• Becomes zero

____________is the intermixing of particles of two different types of matter on their own.

Answer explanation

Diffusion is the net movement of particles from an area where they are at a higher concentration to areas where they are at a lower concentration. This is due to the random movement of the particles.

The forces of attraction between the particles is intermediate in Gases.

• False

• True

______and ______ determine the state of a substance, whether it will be solid, liquid or gas

• Temperature and Pressure

• Pressure and Humidity

• Humidity and

  Volume

• Density and Volume

Sublimation is change of

• Liquid state to solid state

• Solid state to liquid state

• Liquid state to gas state

• Solid state to gas state

Name one more state of matter besides solid, liquid, and gas.

_______is the heat energy required to change 1 kg of a liquid to gas at atmospheric pressure at its boiling point.

• Latent heat of vaporization

• Latent heat of fusion

• Latent heat of condensation

• Latent heat of sublimation

Latent heat of fusion is the amount of heat energy required to change 1 kg of solid into liquid at its melting point.

• True

• False

Which factors affects evaporation?

• Surface area

• Humidity

• Wind Speed

• All of the above

Convert 100^o C to the Kelvin scale.Choose the correct answer.

• 373K

• 293K

• 470K

• 273K