Science Do as directed; [Che-1 M]

Write the relation between Kelvin scale and Celsius scale of temperature.

Write the full forms of the following:
LPG

Write the full forms of the following:
CNG

Why is solid carbon dioxide known as dry ice?

Why do gases diffuse very fast?

Which single term is used to describe the mixing of copper sulphate and water kept in a beaker, on its own?

Which of the two diffuses slower: bromine vapour into air or copper sulphate into water?

Which of the two diffuses faster: a liquid or a gas?

When sugar is dissolved in water, there is no increase in the volume. Which characteristic of matter is illustrated by this observation?

When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance spreads in the whole room quickly. Which characteristic of the particles of matter is illustrated by this observation?

When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance quickly spreads in the entire room. Name the process involved in this.

When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?

When a crystal of copper sulphate is placed at the bottom of a beaker containing water, the water slowly turns blue. Why?

What should be added to a Celsius scale reading so as to obtain the corresponding Kelvin scale reading?

What is the scientific name of particles which make up matter?

What is the:
SI unit of temperature?

What is the physical state of water:
at 25°C?

What is the physical state of water:
at 250°C?

What is the physical state of water:
at 100°C?

What is the physical state of water:
at 0°C?

What is the:
Common unit of temperature.

What is the name of the process due to which dry ice changes into carbon dioxide gas?

What is the mane of the process in which:
A solid turns directly into a gas?

What is the mane of the process in which:
A gas turns directly into a solid?

What is the general name of:
Rigid form of matter?

What is the general name of:
Fluid forms of matter?

What is the common name of solid carbon dioxide?

What is meant by saying that the latent heat of vaporization of water is 22.5 × 10⁵J/ kg?

What is meant by saying that the latent heat of fusion of ice is 3.34 × 105J/ kg?

What do you understand by the term ‘latent heat’? What are the two types of latent heat?

What are the two ways in which the physical states of matter can be changed?

What are the conditions for 'something' to be called matter?

What are the characteristics of matter?

Under what conditions heat can be given to a substance without raising its temperature?

The Kelvin temperature is 270K. What is the corresponding Celsius scale temperature?

The Kelvin scale temperature is 0K. What is the corresponding Celsius scale temperature?

The boiling point of water is 100°C. Express this in SI units (Kelvinscale).

The boiling point of alcohol is 78°C. What is this temperature on Kelvin scale?

State one condition necessary to liquefy gases (other than applying high pressure).

Out of solids, liquids and gases, which one has:
Minimum spaces between particles?

Out of solids, liquids and gases, which one has:
Maximum movement of particles?

Out of solids, liquids and gases, which one has:
Maximum interparticle attractions?

Name two processes which provide the best evidence for the motion of particles in matter.

Name two gases which are supplied in compressed form in homes and hospitals.

Name the temperature at which:
A solid changes into a liquid.

Name the temperature at which:
A liquid changes into a gas.

Name the process by which a drop of ink spreads in a beaker of water.

Name the physical state of matter which can be easily compressed.

Name one property which is shown by ammonium chloride but not by sodium chloride.

Name one property of liquids and gases which tells us that their molecules are moving constantly.