Question

CHEMISTRY
1. Describes in your own Words What happens to particles when salt dissolves in water.
2. Why do gases have neither a fixed shape nor a fixed volume?
3. How do solids, liquids and gases differ in shape and volume?
4. When a crystal of copper sulphate is placed at bottom of a beaker containing water, the water slowly turn blue.
Why?
5. Why do gases diffuse very fast?
6. Why does a gas exert pressure?
7. What are characteristics of matter?
8. Difference between osmosis and diffusion?
9. Difference between latent heat of fusion and latent heat of vaporisation?
10. Why is a liquid hydraulic fluid used to operate the brakes in a car?
11. Explain why a small volume of water in kettle can fill a kitchen with steam?
12. Convert the temperature of 573k to Celsius scale?
13. Why is solid co2 known as dry ice?
14. Convert the temperature of 373°C to Kelvin scale?
( plzzz help me))))) :( ..........​

Answer 1

1) ...Salt particle (NaCl)

and water (H2O)

the positive part Na attracts O

and the negative part Cl attract H

2) the molecules of gases are very far from each other

3) they differ from each other by their molecules

if they right packed then it is solid ...and it is loosely packed then it is liquid

4) the colour of copper sulphate is blue

12)573-273=300k

14)373+273=646C