Classify each of the following as a homogeneous or heterogeneous mixture: Air,soda water,vinegar,filtered tea,wood,soil.

Try segregating the things around you as pure substances or mixtures.

How are sol,solution,and suspension different from each other?

Explain the following giving examples.
$(a)$ Colloid
$(b)$ Suspension

Write the steps you would use for making tea. Use the words solution,solvent,solute,dissolve,soluble,insoluble,filtrate and residue.

Pragya tested the solubility of four different substances at different temperatures and collected the data as given below (results are given in the following table,as grams of substance dissolved in $100 \,g$ of water to form a saturated solution).

Substance Dissolved	$283 \,K$	$293 \,K$	$313 \,K$	$333 \,K$	$353 \,K$
Potassium nitrate	$21$	$32$	$62$	$106$	$167$
Sodium chloride	$36$	$36$	$36$	$37$	$37$
Potassium chloride	$35$	$35$	$40$	$46$	$54$
Ammonium chloride	$24$	$37$	$41$	$55$	$66$

$(a)$ Find the solubility of each salt at $293 \,K$. Which salt has the highest solubility at this temperature?
$(b)$ What is the effect of change of temperature on the solubility of a salt?