What are the basic ingredients needed to make oobleck?

• Cornstarch, vinegar, and food coloring

• Vegetable oil, salt, and water

• Water, baking soda, and vinegar

• Water, food coloring, and cornstarch

Why should you avoid pouring oobleck down the drain?

• It will clog the drains

• It will dissolve and disappear

• It will turn into a gas

• It will clean the pipes

What causes the vegetable oil to rise to the top in the lava lamp experiment?

• It dissolves in water

• It reacts with salt

• It is less dense than water

• It is more dense than water

What is the role of salt in the lava lamp experiment?

• It changes the color of the water

• It dissolves the oil

• It makes the water glow

• It makes the oil sink temporarily

What reaction occurs when vinegar is added to baking soda in the rainbow bubbles experiment?

• An acid-base reaction

• A combustion reaction

• A neutralization reaction

• A precipitation reaction

What gas is produced during the rainbow bubbles experiment?

• Carbon dioxide

• Nitrogen

• Hydrogen

• Oxygen

How does a negatively charged PVC pipe affect a stream of water?

• It freezes the water

• It colors the water

• It heats the water

• It bends the water

What is the purpose of creating a vortex in the tornado in a bottle experiment?

• To break the surface tension and allow water to flow

• To create bubbles

• To change the color of the water

• To mix the water and oil