A colloid is described as what in the material?

• A. Glue
• B. Water
• C. Salt
• D. Sugar

Answer: (A)

A colloid is a mixture where tiny particles are dispersed in another substance rather than truly dissolved. This dispersed phase consists of particles small enough to stay suspended and scatter light, giving a cloudy or gel-like appearance without the substance settling out quickly. Glue is a classic example because it’s made of fine polymer particles dispersed in water, forming a sticky, gel-like network rather than a true solution. The term “colloid” itself evokes this glue-like, dispersed-particle nature. Water, salt, and sugar describe true solutions or pure solvents/solutes, not colloidal suspensions, so they don’t capture the colloid’s suspended-particle behavior in the same way.