Question

2.(1). Convert the temperature of 573 K to the Celsius scale.
(ii). Why does steam cause more severe burns than boiling water?
3.(1). Define the following terms: (a). Sublimation (b). Melting point
(ii). Why are we able to sip hot tea or milk faster from a saucer rather than from a cup?
4.(i). Differentiate among the properties of solid, liquid and gaseous states of matter.
(ii). What is evaporation? State the various factors which affect evaporation.​

Answer 1

Answer:

Q.no.2.(1)-573K-273=300°C

(ii)due to its latent heat of vapourisation

Q.no.2.(1)-transformation of substance directly from solid to gas.

(2)the temperature at which a solid will melt.

ii-because the surface area of the saucer is more than the cup.