Question

(i) Explain why, steam at 100°C is better for heating purposes than boiling water at 100°C.
(ii) Which produces more severe burns boiling water or steam? Why?
(iii) State one condition necessary to liquefy gases (other than applying high pressure.)

Answer 1

Answer:

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Answer 2

Explanation:

• (i) The steam is better for heating purposes more than the boiling water. This is because of the reason that the temperature is not an energy’s measure, whereas heat is the energy.
• We measure the required heat energy to increase the substance’s tempareture and this is known as the heat capacity’s meausre. Various heat capacities are owned by various materials.
• Water absorbs energy when it changes to steam without any increase in the temparature. Thus, there will be a change into liquid water from steam.  
• (ii) More than the boiling water, steam produces more severe burns. This is due to the reason that steam has more heat energy than the water because of the latent vapourization heat.
• (iii) When the cooling of gas happens, then there will be losing kinetic energy by the particles. So, they slow down and form liquid.