Solutions, Acids, and Bases

Which is an example of a solution?

• air

• oxygen

• salt

• water

Sugar is added to tea to make sweet tea. In chemical terms the sugar is the ___________ and the tea (mostly water) is the

• endothermic, exothermic.

• chemical, dissolution.

• reactant, product.

• solute, solvent.

Adding powdered Gatorade to water makes a tasty solution. What is the solvent in this example?

• water

• salt and sugar

• Gatorade liquid

• Gatorade powder

In a solution, the parts of the solution are mixed

• chemically

• physically

• only in water

• by electronic means

After tasting the salt in the ocean water on a visit to the beach one day, you recall from chemistry class that the salt is the __________________ in the ocean water.

• solid

• solute

• solution

• solvent

Consider the four salts represented on the solubility curves displayed as line graphs. In all four cases the salts are which part of an aqueous solution?

• precipitate

• solute

• solvation

• solvent

Jake wants to quickly dissolve Gatorade in a pitcher. What would help Jake INCREASE the rate at which his Gatorade dissolves?

• adding sugar

• cooling the mixture

• adding more Gatorade

• stirring the mixture

Students in Dr. Lee's class were conducting solubility experiments using sucrose and water. Students began with room temperature water (22^oC) and then heated the water to boiling. They calculated the amount of sugar that could be dissolved in the water as the temperature increased. Marge and Bill lost their data and were trying to graph their results from memory. Help them out! Which graph is the MOST reasonable representation of their expected data?

• A

• B

• C

• D

How does crushing a cube of solute increase the rate of dissolving?

• By increasing the amount of solvent.

• By decreasing the amount of solvent.

• By increasing the surface area of the solute.

• By decreasing the surface area of the solute.

If you wanted to design an experiment to show that the solubility of sugar in tea varies according to the temperature, what variable would remain constant?

• Volume of tea

• Concentration of tea

• Temperature of the tea

• Amount of sugar dissolved