During an experiment the students prepared three mixtures: A)Starch in water B) Sodium chloride solution C) Tincture of Iodine.

i) Students observed a visible beam of light through mixture A. Why?
ii) Tincture of Iodine did not show Tyndall effect. Explain reason.
iii) How can you relate particle size to the Tyndall effect?

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.