1. Sign in: Roster @ front of lab Pick up graded papers
Chem 106: Class/ Lab Week 4
Sign in: front of lab
Pick up graded papers

2. https://chem. libretexts

4. DATA Processing Data & Reporting ResultsV A T 34 28 30 20 36 38 22 29 15 14 26 32 24 27 18 45 35 12 16
What number best represents the respective VAT class result?
How much does the class vary in each?
Average Deviation or Standard Deviation of each, Maximum & Minimum of each.
Average of each.
Using a spreadsheet as a very useful tool.

5. Reporting Results Statistics & Rules
Using a spreadsheet as a very useful tool.
Chem 106 VAT Survey Results
AVG
STD
Max
Min
Should Max and Min be eliminated from the Data set and the Average recalculated to better describe the class?

6. MOOCs: “Free” Courses Learning to Use a Spreadsheet (Excel)

11. Popcorn Science: Analytical Chemistry How good is your popcorn?
Industry’s Quality Standards:
Expansion
Kernel Size
Moisture Content
cm3 / g
Kernels / 10 g
Percent H2O
Describe how would you measure each of these experimentally with lab equipment in your lab drawer.

12. Brand % H2O X Y Z cm3 / g Kernels / 10 g Overall Rank 24.8 51.5 14.0
26.2
52.8
13.8 Z
23.0
59.1
14.3
Which is better?
Industry’s Quality Standards:
Expansion
Kernel Size
Moisture Content
cm3 / g
Kernels / 10 g
Percent H2O
higher
lower
higher

13. Brand % H2O X Y Z cm3 / g Kernels / 10 g Overall Rank 24.8 (2)
51.5 (1)
14.0 (2) Y
26.2 (1)
52.8 (2)
13.8 (3) Z
23.0 (3)
59.1 (3)
14.3 (1)
Which is better?
Industry’s Quality Standards:
Expansion
Kernel Size
Moisture Content
cm3 / g
Kernels / 10 g
Percent H2O
higher
lower
higher

14. Brand % H2O X Y Z cm3 / g Kernels / 10 g Overall Rank 24.8 (2)
51.5 (1)
14.0 (2)
5 (1) Y
26.2 (1)
52.8 (2)
13.8 (3)
6 (2) Z
23.0 (3)
59.1 (3)
14.3 (1)
7 (3)
Which is better?
Industry’s Quality Standards:
Expansion
Kernel Size
Moisture Content
cm3 / g
Kernels / 10 g
Percent H2O
higher
lower
higher

15. Popcorn Science How good does it taste? Follow Dr. R’s instructions
Rank red, white, and blue bowls of popcorn.
Taste each and rank them #1 or # 2 or # 3. Do not taste the popcorn if you have food allergies or don’t wish to.
Write down your ranking.

16. Popcorn Science How good does it taste? Follow Dr. R’s instructions
Take out your i-clicker.
Enter your rankings with your i-clicker as the questions appear.
Ranking Questions:
Which tasted the best; rank #1?
Red=A White =B Blue = C D= Cannot Tell E=Allergic/DNT
Which tasted the next best; rank #2? Red=A White =B Blue = C D= Cannot Tell E=Allergic/DNT
Which ranked #3? Red=A White =B Blue = C D= Cannot Tell E=Allergic/DNT

17. Brand 1 2 3
Taste Rank
Red
White
Blue

18. X Y Z Red = X White =Y Blue = Z Brand cm3 / g Kernels / 10 g % H2O
Overall Rank
Taste Rank X
24.8 (2)
51.5 (1)
14.0 (2)
5 (1) Y
26.2 (1)
52.8 (2)
13.8 (3)
6 (2) Z
23.0 (3)
59.1 (3)
14.3 (1)
7 (3)
Red = X
White =Y
Blue = Z

19. Turn in Course/ Lab Manual pp. 12-14 by the end of lab
Chem 106 Lab: Density
Turn in Course/ Lab Manual pp by the end of lab

20. Chem 106 Lab: Density Processing & Reporting Data from Measurements
Complete pp and turn by the end of lab

21. Add your unknown data to the set. Plot the entire data set.
ODD
EVEN
MASS (g)
Volume (mL)
16.26
5.0
43.91
5.1
19.25
6.2
54.26
6.0
25.05
8.3
62.43
7.2
20.99
8.5
71.56
28.45
10.0
90.85
30.62
10.4
95.67
12.3
Turn in by the end of lab

22. Worksheet: Due Today Work Collaboratively: Turn in Individually
Write your name, then list the name(s) in parentheses of anyone who you worked with in doing the worksheet

23. Density http://www.density.com/what.htm
Density = Mass / Volume [g/mL or g/cm3; g/L; kg/m3]
Calculation of iron density
Notes:
Proper units for density are mass per unit volume.

24. Density http://www.density.com/what.htm
Density = Mass / Volume [g/mL or g/cm3; g/L; kg/m3]
Calculation of iron density
Notes:
Proper units for density are mass per unit volume.
mass = extensive; volume = extensive

25. mass = extensive; volume = extensive
Calculation of iron density
Notes:
Proper units for density are mass per unit volume.
mass = extensive; volume = extensive

26. Do you know the names of the final four: 113, 115, 117 and 118?
Elements = Scientifically observable atoms
Atoms combine to form molecules (compounds)
Do you know the names of the final four: 113, 115, 117 and 118?
Nihonium, Moscovium, Tennessine, Oganesson

28. CHEMISTRY of Observable Stuff: Atoms & Molecules
Have you had a caffeine fix today?
The universe, atoms & molecules, in a cup of coffee…. or tea.

29. This particle is said to “hold” or “bond” atoms together in molecules.
CHEMISTRY of the Atom
FUNDAMENTAL PARTICLES:
Mass Charge Symbol
Nucleus:
PROTON amu H+, H, p
1.67 x kg
NEUTRON amu n
_________________________________________
ELECTRON very small e -
 2000 x smaller than a proton or neutron
This particle is said to “hold” or “bond” atoms together in molecules.

30. CHEMISTRY of the Atom
Atoms (neutral electrostatic charge: # protons = # electrons )
# Protons = Atomic Number
Atomic Mass = # Protons + # of Neutrons
Isotope: same atomic number but different atomic mass (different # of neutrons)

31. CHEMISTRY of the Atom

32. K K 39 19 39 Atomic Symbols Mass number   Element Symbol
Atomic number  39 K
Also written as 

33. CHEMISTRY of the Atom Atomic Number = 6 (atom’s identity) Carbon
Atomic Mass = 13 (isotope 13)
6 protons; # neutrons =
neutral atom has 6 electrons

34. Nuclear Particles Emitted from unstable nucleii (Isotopes)
Emitted Particles:
Mass Charge Symbol
alpha particle 4 amu
beta particle very small
gamma very very small
HIGH Energy: “particles”

35. Nuclear Penetrating Power
alpha particle: low
beta particle: moderate
gamma: high
X-rays?
Water

36. Nuclear Penetrating Power
alpha particle: low
beta particle: moderate
gamma: high
X-rays?
Water

37. Exposure to Radiation
100 mrem = 1 mSv

38. Nuclear Reactions / Fission
President Truman / Hiroshima
August 6, 1945

39. Worldwide Nuclear Power Plants
Fission: Uranium Fuel

41. Nuclear Plant Disaster March 2011
Fukushima, Japan

42. Nuclear Reactions / Fusion
National Ignition Facility Lawrence Livermore National Laboratory

43. ITER: International Thermonuclear Experimental Fusion Reactor
Research and engineering project which is currently building the world's largest and most advanced experimental tokamak nuclear fusion reactor in the south of France.