Solutions

The _____is the part that gets dissolved. 

• solute 

• solvent 

• solution 

• Sacajawea 

Answer explanation

The correct answer is 'solute' because it refers to the substance that is dissolved in a solution, while 'solvent' is the substance that does the dissolving. 'Solution' is the mixture of solute and solvent.

A solution is a kind of ________. 

• mixture 

• compound 

• element 

• stuff 

Answer explanation

A solution is a homogeneous mixture of two or more substances. Unlike compounds, which have a fixed composition, mixtures can vary in composition, making 'mixture' the correct choice.

This is the part of the solution that does the dissolving. 

• solute

• solvent 

• salt water 

• First Continental Congress 

Answer explanation

The solvent is the substance that does the dissolving in a solution. In the case of salt water, water acts as the solvent, while salt is the solute. Therefore, the correct answer is 'solvent'.

What does it mean to be "Soluble" ?

• Capable of being a solid.

• To have soul.

• Capable of being dissolved.

• To sink.

Answer explanation

To be 'soluble' means capable of being dissolved in a solvent, typically water. This distinguishes it from being solid or sinking, making 'capable of being dissolved' the correct choice.

A measure of the amount of solute in a given amount of solvent or solution is...

• saturated

• solubility

• concentration

• miscible

Answer explanation

The correct answer is concentration, which measures the amount of solute in a given amount of solvent or solution. Saturated refers to a solution that cannot dissolve more solute, while solubility is the ability to dissolve.

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.

Answer explanation

A saturated solution contains the maximum amount of dissolved solute at a given temperature and pressure. This means no more solute can dissolve in the solvent, making the first answer choice correct.

The concentration of a mixture can be increased in which of the following ways?

• Heating the mixture

• Adding more water “solvent”

• Adding more “solute”

• Stirring the mixture

Answer explanation

The concentration of a mixture increases by adding more 'solute', which increases the amount of the substance dissolved in the solvent. Heating may change solubility, but adding solvent decreases concentration.

Which substance is SOLUBLE in water?

• sand

• oil

• salt (sodium chloride)

• sulfur

Answer explanation

Salt (sodium chloride) is soluble in water due to its ionic nature, allowing it to dissociate into sodium and chloride ions. In contrast, sand, oil, and sulfur do not dissolve in water.

Which substance is INSOLUBLE in water?

• salt (sodium chloride)

• sugar (sucrose)

• oil

• copper sulfate

Answer explanation

Oil is insoluble in water due to its nonpolar nature, while salt, sugar, and copper sulfate are polar or ionic substances that dissolve in water.

If you dissolve 5g of sugar in 10cm3 of water the concentration will be...

• 2g/cm3

• 0.5g/cm3

• 50g/cm3

• 15g/cm3

Answer explanation

To find the concentration, divide the mass of sugar (5g) by the volume of water (10cm3). Thus, 5g / 10cm3 = 0.5g/cm3, making 0.5g/cm3 the correct concentration.