Aqueous Systems and Solutions

Draw

Draw out a how the water molecules would interact with each other.

Multiple Choice

The amount of energy required to raise the temperature 1ºC for every kilogram is called____?

• Thermal Energy

• Specific Heat

• Temperature

• Kinetic Energy

Multiple Choice

How does heat flow?

• Always from cold to warm

• Always from warm to cold

• Both warm to cold & cold to warm

• It depends on the temperature

Multiple Choice

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?

• Large cup (Trenta)

• Small cup (Tall)

• Medium cup (Venti)

• All three are the same temperature so they have the same thermal energy

Multiple Choice

_________________ substances can dissolve in a liquid.

• Insoluble

• Soluble

Multiple Choice

Classify the following molecule.

• polar

• nonpolar

Multiple Choice

Classify the following molecule.

• polar

• nonpolar

Multiple Choice

Why is the molecule nonpolar?

• There are nonbonding pairs on the central atom.

• There are different types of elements bonded to the central atom.

• There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

Multiple Choice

Why is the molecule polar?

• There are nonbonding pairs on the central atom.

• There are different types of elements bonded to the central atom.

• There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

Multiple Choice

Pepper is an example of a substance that is __________________ in water.

• soluble

• insoluble

• dissolves

Multiple Select

Which substances are insoluble in water? (choose TWO answers)

• sand

• salt

• sugar

• flour

Multiple Choice

In this beaker there is some sand floating in water, but most of the sand has settled at the bottom. This would be best described as

• A solution

• A colloid

• A suspension

• A compound

Multiple Choice

In a ______________, one substance is dissolved in another substance.

• solution

• suspension

• colloid

Multiple Choice

Which diagram best illustrates the ion-molecule attractions that occur when the ions of NaCl(s) are added to water?

• 1

• 2

• 3

• 4

Multiple Choice

A solid substance was tested in the laboratory. The test results are listed below.

• dissolves in water

• is an electrolyte

• melts at a high temperature

Based on these results, the solid substance could be

• Cu

• CuBr₂

• C

• C₆H₁₂O₆

Multiple Choice

A substance that conducts an electrical current when dissolved in water is called

• catalyst

• metalloid

• electrolyte

• nonelectrolyte

Multiple Choice

Which of the following is not an electrolyte?

• KBr

• LiOH

• RbNO₃

• CH₄

Multiple Choice

Which of the following best describes the components and properties of electrolytes? Electrolytes consist of –

• ions and are conductive

• metals and are non-polar

• nonmetals and are anions.

• covalent bonds and are polar

Multiple Choice

In order for a solution to be an electrolyte, the solute must

• be a molecular compound.

• restrict the flow of electricity.

• create a saturated solution.

• consist of positive and negative ions

Multiple Choice

Na₂CO₃ · 10H₂O is known as sodium sulfate ______

• Hydroxide

• Hydrate

• Decahydrate

• None of the above

Multiple Choice

A compound is a hydrate when it...

• is composed of only hydrogen and oxygen

• is a state of water

• traps water inside of the compound

• repels water from the compound

Multiple Select

ARE YOU HAPPY

• yes

• :)

• don't click this one

• no

Multiple Choice

What is a "homogeneous mixture of two or more substances in a single phase"?

• Solution

• Solvent

• Solute

• Compound

Multiple Choice

What does it mean to be "Soluble" ?

• Capable of being a solid.

• To have soul.

• Capable of being dissolved.

• To sink.

Multiple Choice

Which of the following are considered to be heterogeneous mixtures?

• Colloid

• Solution

• Suspension

• Both Orange and Blue are right

Multiple Choice

Which of the following are considered to be a homogeneous mixture?

• Colloid

• Solution

• Suspension

• All Mixtures

Multiple Choice

What is the unit for molarity?

• mass/liters

• moles

• liters

• moles/liter

Multiple Choice

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

• saturated

• solubility

• concentration

• miscible

Multiple Choice

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.

Multiple Choice

A supersaturated 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.

Multiple Choice

An unsaturated 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.

Multiple Choice

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.

Multiple Choice

A nonelectrolyte 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.

Multiple Choice

The dissolving medium in a solution is called ... 

• colloid

• solution

• solute

• solvent

Multiple Choice

The substance dissolved in a solution is called ... 

• colloid

• solution

• solute

• solvent

Multiple Choice

What is the molarity of a 2 liter solution containing 5 moles of NaCl?

• 2.5

• 0.4

• 2.5 moles/liter

• 10 moles/liter

Multiple Choice

How many moles of NaCl are present in 6000. ml a 1.5 M NaCl solution?

• 9 moles NaCl

• 9000

• 9

• 4000  moles NaCl