Exploring Supersaturated Solutions and Rock Candy

What is the main topic of the video?

• Making rock candy from a super saturated solution

• The history of rock candy

• Different types of candy

• The science of baking

What does molar concentration compare?

• The weight of the solute

• The volume of the solvent

• The temperature of the solution

• The amount of solute to the total amount of solution

How does temperature affect solubility?

• Higher temperature decreases solubility

• Temperature has no effect on solubility

• Higher temperature increases solubility

• Lower temperature increases solubility

What is a super saturated solution?

• A solution with no solute

• A solution with equal amounts of solute and solvent

• A solution with more solute than can be dissolved at a given temperature

• A solution with less solute than can be dissolved at a given temperature

What is the role of a seed crystal in crystallization?

• It encourages the excess dissolved solute to turn back into solid

• It dissolves the solute

• It increases the temperature of the solution

• It decreases the solubility of the solution

What materials are needed to make rock candy?

• Two cups of water, six cups of sugar, food coloring or flavoring, a large jar, wooden skewers, and a spoon

• Two cups of water, six cups of sugar, food coloring or flavoring, a small jar, metal skewers, and a clip

• Two cups of water, six cups of salt, food coloring or flavoring, a large jar, wooden skewers, and a clip

• Two cups of water, six cups of sugar, food coloring or flavoring, a large jar, wooden skewers, and a clip

Why is it important to ensure everything is clean before making rock candy?

• Dirt can increase the solubility of the solution

• Dirt can make the candy taste bad

• Dirt can act like a seed crystal and ruin the candy

• Dirt can change the color of the candy

Tags

CCSS.7.EE.B.4A

What should you do after wetting the wooden skewer and rolling it in sugar?

• Rinse it with fresh water

• Add it to the sugar solution immediately

• Place it in the boiling water

• Set it aside to dry

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CCSS.7.EE.B.4A

How many cups of sugar should be dissolved in the boiling water?

• Four cups

• Eight cups

• Six cups

• Two cups

How long should you leave the jar undisturbed for crystallization to occur?

• A few weeks

• A few days

• A few hours

• A few minutes