Chemical Reactions & Solutions Review

The _____is the part that gets dissolved. 

• solute 
• solvent 
• solution 
• Sacajawea 

A solution is a ________ mixture. 

• heterogeneous 
• homogeneous 
• dumb 
• mixed 

A saturated solution is one that....

• contains the maximum amount of dissolved solute.
• contains less solute than a saturated solution.
• contains more solute than a saturated solution.
• is the amount of a substance required to form a saturated solution.

An electrolyte is...

• The rapid, random movement of particles in colloidal dispersion.
• A substance that dissolves in water and conducts electric current.
• A substance that dissolves in water and does not conduct electric current.
• The solution process when water is the solvent.

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

• 83 grams
• 75 grams
• 40 grams
• 12 grams

How many grams of NaNO₃ are soluble in 100 g of water at 10 ºC?

• 80 grams
• 100 grams
• 40 grams
• 10 grams

A solution that is able to dissolve additional solute is best described as

• supersaturated.

• concentrated.

• saturated

• unsaturated.

A student pours mineral salts into a bottle of cold water. Which of the following best explains why shaking the bottle will affect the dissolving rate of the salt?

• Shaking exposes the salts to the solvent more quickly.

• Shaking helps more water evaporate.

• Shaking equalizes the water temperature.

• Shaking causes more ions to precipitate out of solution.

Three 10 g samples of sugar are represented below.

Sample A dissolves in water more slowly than sample B.

Sample B dissolves more slowly than sample C.

Which of the following best explains why sample A dissolves more slowly than the other two?

• It has the most volume.

• It has the smallest surface area.

• It has the largest number of sugar molecules.

• It has the fewest bonds between sugar modules.

You can make a solute dissolve more quickly in a solvent by

• adding more solute.

• adding ice.

• heating the solvent.

• removing some solvent.