Question

1. how can you grow many, small crystals?

○ grow the crystals cold
○ grow the crystals hot
○ grow the crystals slowly
○ grow the crystals fast

1. how can you get more solute to dissolve in a solvent?

○ shake the solution
○ cool the solution
○ heat the solution
○ evaporate the solvent

1. when the blue crystals grew, where did the water go?

○ water warmed
○ water evaporated
○ water froze
○ water was absorbed by the crystal

49 how can you grow crystals from a liquid?

Explanation:

Question 46

To grow many small crystals, fast growth (like rapid cooling or quick evaporation) causes many nuclei to form, leading to small crystals. Slow growth forms fewer, larger crystals. Cold/hot alone don't determine size as much as speed. So "grow the crystals fast" is correct.

Heating a solution generally increases the solubility of most solid solutes (e.g., dissolving more sugar in hot water). Shaking speeds dissolution but not maximum amount. Cooling usually decreases solubility. Evaporating solvent reduces the amount that can dissolve (leads to crystallization). So heating works.

When crystals grow from a solution (like blue copper sulfate crystals), water in the solution evaporates, leaving the solute to crystallize. Warming is a process, not where water goes. Freezing is phase change to solid, not relevant here. Absorption by crystal isn't typical for water in this context. So water evaporated.

Answer:

D. grow the crystals fast

Question 47