1. Unit 1 Lecture 1: Moles & Particle Diagramming
The student is able to connect the number of particles, moles, mass, and volume of substances to one another, both qualitatively and quantitatively.

2. Matter Anything that has mass and occupies space Three Types
Elemental atom (or a part of the atom)
Compound
Mixture

3. Mass Measure of how much matter is in a substance.
Determined using an electronic balance.
Calibrated using a known mass.

4. Space
Volume of an amount of matter depends on pressure and temperature.

5. Particle diagrams show the types of matter, how the particles interact, and how fast the particles are moving in a sample.

6. Demo: Isopropanol and Water

7. Demo: Copper

8. Demo: Water and NaCl

9. How are mass, number of particles and volume related?
Using molar conversion factors

11. Molar Mass
The mass in grams of one mole of any pure substance.

12. Set-up for Problem Solving
Put your given over 1.
Use units from known conversion factors to convert into correct unit.
Go back and fill in the numbers.
Solve.

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CONCEPT CHECK!
Calculate the number of copper atoms in a g sample of copper ×1023 Cu atoms
6.022×1023 Cu atoms; g of Cu is 1 mole of Cu, which is equal to Avogadro’s number.
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CONCEPT CHECK!
Which of the following is closest to the average mass of one atom of copper?
a) g
b) g
c) g
d) g
e) x g
The correct answer is “e”. The mass of one atom of copper is going to be extremely small, so only letter “e” makes sense. The calculated solution is (1 Cu atom) × (1 mol Cu/6.022×1023 Cu atoms) × (63.55 g Cu/1 mol Cu).
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CONCEPT CHECK!
Which of the following g samples contains the greatest number of atoms?
Magnesium
Zinc
Silver
The correct answer is “a”. Magnesium has the smallest average atomic mass (24.31 u). Since magnesium is lighter than zinc and silver, it will take more atoms to reach g.
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EXERCISE!
Rank the following according to number of atoms (greatest to least):
107.9 g of silver
70.0 g of zinc
21.0 g of magnesium
b) a) c)
b, a, c; The greater the number of moles, the greater the number of atoms present. Zinc contains 1.07 mol, Ag contains mol, and Mg contains mol.
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EXERCISE!
Consider separate gram samples of each of the following: 
H2O, N2O, C3H6O2, CO2
Rank them from greatest to least number of oxygen atoms.
H2O, CO2, C3H6O2, N2O
H2O, CO2, C3H6O2, N2O; The number of oxygen atoms in each is:
H2O = 3.343×1024
CO2 = 2.737×1024
C3H6O2 = 1.626×1024
N2O = 1.368×1024
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18. Exit Ticket
Cut then paste the examples given onto the summary sheet.