Science and Fun with Rock Candy and Liquid Nitrogen

What is the first step in making rock candy?

• Dissolve sugar in cold water

• Heat water and dissolve sugar

• Add food coloring to water

• Freeze the sugar solution

Why is it important to let the seed crystals dry before placing them in the sugar solution?

• To prevent them from dissolving

• To ensure they stick to the skewer

• To make them taste better

• To change their color

What challenge is faced when creating a massive rock candy crystal?

• It changes color unexpectedly

• It loses its sweetness

• It becomes too large to remove from the container

• It melts too quickly

What happens to nitrogen when it is cooled to extremely low temperatures?

• It evaporates

• It becomes a solid

• It turns into a gas

• It becomes a liquid

What was the result of trying to turn a pumpkin into a sledgehammer using liquid nitrogen?

• The pumpkin became a solid hammer

• The pumpkin turned into a liquid

• The pumpkin shattered into pieces

• The pumpkin changed color