Unit 6 Test: Solutions, Acids and Bases

In a homogeneous solution, __________________________.

• the solute is scattered evenly throughout the solution.

• the solute is scattered unevenly throughout the solution.

• oil is at the top of the solution.

• water is always the solvent.

In a heterogeneous mixture, ______________________.

• oil is always at the top.

• light is scattered.

• water is always at the top.

• light does not scatter.

Tags

NGSS.MS-PS4-2

When oil is not mixed into the water and simply stays at the top, then this is called a ____________________________.

• mixture

• colloid

• solution

• suspension

When a mixture has heavy particles, but are not heavy enough to be suspended at the top and neither are they evenly distributed throughout the mixture is called ________________.

• mixture

• colloid

• solution

• suspension

When the solute is dispersed evenly throughout the solution/mixture, then it is a __________________________.

• suspension

• homogeneous solution

• colloid

• heterogeneous mixture

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

• solvent, solute

• chemical, dissolution

• reactant, product

• solute, solvent

James is preparing three solutions of salt water. Each of the solutions has the same amount of water in the beaker and different amounts of salt. In the first beaker, there is one scoop of salt in the beaker. The second beaker has two scoops of salt. The third beaker has three scoops of salt. Which of the beakers is the most concentrated solution?

• beaker 1

• beaker 2

• beaker 3

• all the beakers are equal in concentration

James is preparing three solutions of salt water. Each of the solutions has the same amount of water in the beaker and different amounts of salt. In the first beaker, there is one scoop of salt in the beaker. The second beaker has two scoops of salt. The third beaker has three scoops of salt. Which of the beakers is the most dilute solution?

• beaker 1

• beaker 2

• beaker 3

• all of the solutions are equally diluted

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

Usually, when the temperature is increased, what will happen to the rate of dissolving?

• It will stop.

• It will increase.

• It will decrease.

• It will remain the same.

Tags

NGSS.MS-PS1-4