Halloween Chemistry

What is a solvent

• A liquid that will dissolve a solid solute

• Another word for solution

• A thing that make drinks change colour

• Usually the solid about to be dissolved

The ___ is the thing being dissolved.

• solute

• solvent

• mixture

• solution

Solutions are composed of __________ .

• salts and solutes
• solvents and salts
• solutes and alloys
• solutes and solvents

If I dissolve sugar in water, what is the solute?

• Water
• Hydrogen
• Sugar
• Carbon

If I dissolve salt in water, what is the solvent?

• salt

• water

• salt & water

• none of the above

What is the definition of solubility?

• The ability of a substance to dissolve in another substance
• The ability of a substance to react with another substance
• The ability of a substance to change its state from solid to liquid
• The ability of a substance to change its color when heated

What does dissolve mean?

• The particles spread out and become part of the water

• It sinks to the bottom of the water

• It floats on top of the water

• None of the above

Think back to our "Growing Ghosts" experiment. Describe your observations of what happened when the baking soda was dropped into the vinegar.

What do your observations (bubbles formed) tell you about the reaction that took place? Is the reaction a physical change and can be reversed? Or is it a chemical change and a new substance was formed?

BONUS: Why do you think the drink mix was the fastest substance to dissolve in our "Scary Solubility"?