Crystal Forest Activity Quiz

What is the main concept demonstrated in "The Crystal Forest" activity?

• Photosynthesis

• Crystal formation

• Fermentation

• Combustion

What is the role of capillary action in the demonstration?

• To dissolve the tree silhouettes

• To transport the solution up the trees

• To evaporate the solution

• To change the color of the trees

What is the purpose of adding food coloring to the tips of each branch on the trees?

• To make the tree more realistic

• To add color to the crystals that form

• To prevent the tree from drying out

• To strengthen the tree structure

How much bluing solution is measured out using the 500-mL graduated cylinder?

• 420 mL

• 500 mL

• 70 mL

• 100 mL

What should be done with the weighing dishes after placing the trees in them?

• Place them in a fume hood

• Ensure the bottom edges are soaking in the solution

• Cover them with a lid

• Shake them gently

How long does it take for the crystals to start forming?

• 1–12 hours

• 24–48 hours

• 30 minutes

• 5–6 hours

What is the purpose of shaking the bluing solution bottle before use?

• To thoroughly mix the solution

• To cool down the solution

• To remove any air bubbles

• To sterilize the solution

Which compound is formed when the bluing mixture is combined with ammonia and sodium chloride?

• Ammonium chloride

• Sodium hydroxide

• Potassium chloride

• Sodium bicarbonate

Tags

NGSS.MS-PS1-2

What is the effect of evaporation on the solution in the demonstration?

• It dilutes the solution

• It concentrates the solution

• It freezes the solution

• It neutralizes the solution

Tags

NGSS.MS-PS1-4

What is the soluble form of Prussian blue?

• Fe[Fe(CN)6]3

• KFe[Fe(CN)6]

• Na4Fe[Fe(CN)6]3

• Fe2[Fe(CN)6]3