Q1. Define the following terms: (3)
Diffusion.
Latent heat of fusion.
Boiling point.
Q2. Give reasons: (4)
Gases completely fill the vessel in which they are kept.
Evaporation causes cooling.
Solid carbon dioxide is called dry ice.
Water is liquid at room temperature.
Q3. With the help of a well labeled diagram describe an activity to show that particles of matter are very small.
Answers
Answer:
Latent Heat of fusion: The amount of heat energy that is required to change 1 kg of solid into liquid at atmospheric pressure at its melting point is known as the Latent Heat of Fusion. ... Sublimation: Matters change their state from solid to liquid and from liquid to gas on the application of heat.
Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point,
Diffusion is net movement of ions and molecules from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in chemical potential of the diffusing species
Answer:
boiling point is in which substance start boiling.
diffusion - the intermixing of partical of two different substance is Know as diffusion.
the amount of heat energy released or absorbed when a solid change inot liquid at atmosphere pressure at it's mailing point is called latent heat of fusion .
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