unit 2b the mole and molar mass conversions · pre ap chemistry unit 3: the mole and molar mass...

Unit 2B The Mole and Molar Mass Conversions

Pre AP Chemistry

Pre AP Chemistry Unit 3: The Mole and Molar Mass Conversions

Pag

e1

Unit 2B: Learning Goals and Standards

Learning Objectives

Oklahoma Standards OSASS

AP Standards Learning Objectives

Student will be able to:

Understand the relationship between mass and count of objects such as atoms.

Define mole and Avogadro’s number. Calculate and interconvert between number of moles

and atoms. Calculate and interconvert between number of moles

and mass.

HS-PS1-7

1.1 1.4 1.14 1.18

Unit 2B Learning Scale

Score Student will be able to

4.0 In addition to (score 3.0) performance, I can demonstrates in-depth inferences and applications that go beyond what was taught.

3.5 In addition to (score 3.0) performance, I have partial success at (score 4.0) content

3.0 Calculate and interconvert between number of moles and atoms. Calculate and interconvert between number of moles and mass.

2.5 I have no major errors or omissions regarding (score 2.0) content, and I have partial success at (score 3.0) content with help

2.0 Understand the relationship between mass and count of objects such as atoms. Define mole and Avogadro’s number.

1.5 I have partial success with the (score 2) learning goals on my own

1.0 With help, I have partial success with (score 2) and some (score 3) learning goals

0.5 With help, I can have partial success of some (score 2) learning goals

0 Even with help, I cannot complete any of the listed learning goals above

I Do We Do You Do

Produce video lectures

Author inquiry activities

Facilitate class discussion

Produce homework videos

Class Inquiry Activities

Class discussion

Quizzes (CFA)

Tests (CSA)

Pre-read literature provided

Watch lecture videos located on Edmodo

Participate in class activities and discussion

Complete homework and verify responses by watching the homework videos

Attend tutoring when offered


Pag

e2

2B-1 Content Reading Resource Read and

annotate


Pag

e3


Pag

e4


Pag

e5


Pag

e6

Class Activity 2B-1

Mole Conversions

Model 1

1. How many eggs are in model 1? _______

2. How many items are in a dozen? _______

3. How many dozen(s) of eggs are in model 1? _______

4. Write a conversion factor for a dozen eggs

5. Does the term dozen only refer to eggs? Explain your answer


Pag

e7

Model 2

6. Using the conversion factor from question 4 and your understanding of the dozen concept, create a

conversion factor for a dozen marbles, then us dimensional analysis (conversion table) to identify how

many dozen marbles are present in model 2


Pag

e8

Read ME!

The term mole in science is much the same as the term dozen in math, the only difference is that a dozen is

equivalent to 12, whereas a mole is equivalent to 6.022 x 1023. This number is also referred to as Avogadro’s

number. A dozen is nothing more than a unit less description of a quantity. It can be applied to anything and

does not change the unit of measure of whatever it may be assigned to. The periodic table is based on the

quantity of a mole and refers to the number of atoms of each type of element represented for the values on the

table.

Model 3

7. How many of each of the following items are in model 3

Marbles _______ Peas______

8. Tommy claims that 12 peas and 12 marbles would have the same mass. Is Tommy correct? Explain.

9. Since the periodic table is based on the quantity of a mole, how many of each type of atom is

represented on the periodic table?

10. Would you expect that the mass of 1 mole of any element would have an equivalent mass in regards to

1 mole of another element? Explain. (Justify your answer with evidence from the periodic table)


Pag

e9

11. What is the mass of 1 mole of sulfur? __________

12. How many atoms make up 39.95 grams of sulfur? __________

13. How many atoms are in 2.75 moles of Lithium?

14. Haw many grams are in 1 mole of H2O (water) molecules?

The atomic mass unit on

the periodic table is

equivalent to 1 gram

1 amu = 1 gram


Pag

e10


Pag

e11


Pag

e12

2B-1 Homework

unit 2b the mole and molar mass conversions · pre ap chemistry unit 3: the mole and molar mass...

Documents