Unit 4a

Question 1

Avagadros Number

Answer 1

6.02X10^23

Question 2

Concept of Avagadros Number

Answer 2

Equal to 1 mole and the GFM of a molecule.

Question 3

GFM

Answer 3

The added mass of all of the elements in a molecule. Equal to one mole.

Question 4

Percent Composition formula

Answer 4

(Given mass/Total Mass) X 100

Question 5

Mole

Answer 5

Equal to the GFM of a molecule and Avagadros number.

Question 6

Solution

Answer 6

A liquid mixture where the solute is distributed into the solvent.

Question 7

Solute

Answer 7

The substance that is being dissolved.

Question 8

Solvent

Answer 8

The substance that is dissolving the solute to form a mixture.

Question 9

Mole Calculations

Answer 9

number of moles = given mass/gram formula mass

Question 10

Diluted

Answer 10

A small amount of dissolved solute.

Question 11

Concentrated

Answer 11

A large amount of dissolved solute.

Question 12

Soluble

Answer 12

The ability for a substance to dissolve in another.

Question 13

Insoluble

Answer 13

A substance that cannot dissolve.

Question 14

WHy are Ionic solutes good conductors.

Answer 14

They are good conductors because their when dissolved, ions can move freely.

Question 15

Molarity

Answer 15

Molarity is the number of moles of solute per liter of solution.

Question 16

Molarity Formula

Answer 16

Molarity = moles of solute/liters of solution.

Question 17

Compare solubility of Gas to solubility of solid

Answer 17

As temp increases, solids solubility rises while gasses’ goes down.

Question 18

Dissolving Process of ionic and molecular solutes.

Answer 18

Ionic solutes separate into more than one particle when they dissolve, whereas molecular solutes separate with dipole dipole interactions and hydrogen bonding.

if the solute is ionic, the individual ions separate from each other and become surrounded by solvent particles