The Mole

Question 1

How can we tell molecular and ionic compounds apart?

Answer 1

Molecular - 2 non-metals
Ionic - Metal and non metal

Question 2

How are molecular compounds named?

Answer 2

Prefixes, second element ending in ide

Question 3

1 prefix:

Answer 3

mono

Question 4

2 prefix:

Answer 4

di

Question 5

3 prefix:

Answer 5

tri

Question 6

4 prefix:

Answer 6

tetra

Question 7

5 prefix:

Answer 7

penta

Question 8

6 prefix:

Answer 8

hexa

Question 9

7 prefix:

Answer 9

hepta

Question 10

8 prefix:

Answer 10

octa

Question 11

10 prefix:

Answer 11

deca

Question 12

Roman numerals - 1-4

Answer 12

I, II, III, IV, V,

Question 12

9 prefix:

Answer 12

nona

Question 13

How are ionic compounds named?

Answer 13

• Use Roman numerals for metals with multiple charges
• metal is always first
• The second element ending is always - ide / ate/ ite

Question 14

Diluted

Answer 14

= C1V1 = C2V2

Question 14

What is molar mass used for and what is it?

Answer 14

Convert between mass and number of moles and it is the mass of one mole per substance

Question 15

Molar concentration

Answer 15

= molarity = M= mol/l

Question 16

Empirical formula

Answer 16

The simplest whole number ratio of atoms in the compound - ionic - made up of 2 same repeating structures no matter what
Convert % to g
convert gram to mol
divide each by the smallest mole value
multiply values to get the simplest whole-number ratio

Question 17

STP

Answer 17

= 22.4L = 0 degrees Celsius

Question 18

Avagadro Number

Answer 18

6.02 x 10^23

Question 19

What can the particles measured by a mole represent?

Answer 19

Any particle - number of atoms, molecules, ions, elections, etc.

Question 20

Molar Volume:

Answer 20

The volume of one mole of a gas at a specific temperature and pressure - so one mole of any gas will have the same volume

Question 20

Gasses

Answer 20

• most share the same chemical properties
• gasses in molecules are far apart and move randomly

Question 21

What does it mean if a solution is more concentrated?

Answer 21

more solute in it

Question 22

What does it mean if a solution is diluted or less concentrated?

Answer 22

less solute

Question 23

What happens when you dilute a solution?

Answer 23

more solvent is added concentration decreases, and volume increases, and the number of moles does not change.

Question 24

what a Mole is and how it relates to Avogadro’s Number

Question 25

Avogadro’s Law and explain why all gases share the same general properties

Question 25

describe the concentration of solutions, referring to the relative amounts of solvent and solute and the level of saturation