answer the questions of science
Answers
Full digram answer explanation of sublimation and ammonium chloride and example of the 1 question also this
Ans1 Some solid vaporise without melting.Such a change in state is known as sublimation
Answer:
1. Sublimation is the property of substance in which they are converted directly from solid to gas or vice versa. Such substances are known as sublime. Some examples of solids which sublime are ammonium chloride, camphor, naphthalene and anthracene. Let us perform an activity to separate a mixture of ammonium chloride and salt.
Take a mixture of ammonium chloride and salt in a china dish cover it inverted conical transparent funnel. At the other end of the funnel put a cotton plug so that vapour could not come out. Now place china dish on a burner. As the ammonium chloride is sublime after heating it will directly converted into vapour and this vapour will again condense at the upper colder part of funnel to form solid ammonium chloride. In this way the mixture ammonium chloride and salt can be separated by the sublimation method.
The image is given
2.Yes, a rubber band changes shape under force and regains the same shape when the force is removed. It breaks on applying excessive force. Yes, it is a solid.
3.sponge is a porous solid. sponge has minute holes in which air is trapped when we press it the air is expelled out and we are able to compress it. A sponge can be compressed easily but still we count them in solids because they have minute pores in it which are filled with air.
Hope it's help u
plzz mark it's brainlist
