Answer the following
1.Sponge is solid yet we are able to compress it why ?
2.Justify the statement
a)Water at room temperature is a liquid
b)An iron all mirah is solid at room temperature
3.What happens around each crystal of solid on introducing in water?
Answers
HEYA ❣️
❤️SPONGE IS SOLID YET WE ARE ABLE TO COMPRESS IT BECAUSE THERE ARE SOME PORES PRESENT IN THE SPONGE IN WHICH AIR IS TRAPPED. WHEN COMPRESS THE AIR EXPELLED OUT BUT WHEN WE REMOVE THE FORCE THEN IT GAINS ITS ORIGINAL SHAPE.
❤️WATER AT ROOM TEMPERATURE IS A LIQUID BECAUSE IT HAS A FIXED VOLUME.
❤️AN IRON ALMIRAH IS A SOLID AT ROOM TEMPERATURE BECAUSE IT IS HAVING THE FOLLOWING PROPERTIES SAME AS SOLIDS. JUST LIKE HAVING DEFINITE SHAPE AND VOLUME.
❤️ IF WE DROP ANY CRYSTAL IN WATER THEN IT ADJUST ITSELF IN THE INTERMOLECULAR SPACES OF WATER.
Answer:1)
Explanation:A 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.
2)a)
Explanation :A) water at room temperature is liquid because at this temperature (i)it has fixed volume and (ii)it can flow.
B) The melting and boiling points of most of the metals are very high. The room temperature is about 20-25 degree centigrade. But the melting point of iron is 1538 degree centigrade. So, the iron almirah is a solid at room temperature.
3)When a solid dissolves the solid (solute) and the liquid (solvent) form a very close intimate mixture called a solution. Unless the solid is coloured it will not be visible and the solution may just look like the starting liquid. However the presence of the solid can be confirmed by a number of strategies. In some cases, eg salt or sugar, taste will indicate the presence of the solid. Alternatively evaporation of the liquid should leave a solid residue.The mixing is so complete the particles in a solution will pass through most filter paper so it is not possible to separate the mixture by filtering. The particle model can provide a simple representation of dissolving in terms of mixing to show what happens when a solid dissolves, (Fig3). If a solid dissolves on mixing its particles break apart and form a loose association with the liquid (solvent) particles.