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Agenda
Introductions and get to know us models
Objective:
You will design and synthesize a person-ical
model to inform your classmate and Mr. G
about who you are and what you want to
become
Essential QuestionsIf a student completes everything their teacher
asks of them, homework, extra studying,
participation in class, etc, should they be
guaranteed a grade of A or B? Why?
Bell Work16-Aug-17
How can matter be classified by its parts or
broken down in specific components?
Break it down into an organized
representation of the constituent parts.
Define/ describe these.
Agenda
Matter
Lab Safety
Essential QuestionSpeaking Metaphorically, at the end of the day who is responsible for your education and what is achieved during it?
AgendaMatter
Sig Figs
Personal Chemical Structures
Chapter 1: Matter and Measurements
Contents
Physical properties and states of matter
Système International Units
Uncertainty and significant figures
Dimensional analysis
Properties of Matter
Matter: Occupies space, has mass and inertia
Composition: Parts or components
ex. H2O, 11.9% H and 88.81% O
Properties: Distinguishing features
physical and chemical properties
States of Matter
Classification of Matter
3D Chemical Structure of a AP Chemistry Student
-Name, legal and invented chemical name
· Birth Day
· Male or Female
· Years in FW School District
· What am I doing or going to do to restore/ keep FWHS a to AZ school
· Favorite sport or activity
· Future career or life aspiration
· Best gift you have given someone else
· What I can do to make the world a better place
-Picture of yourself
-Describe yourself in 20 words or less OR describe the most
embarrassing or humorous situation you have been in within the
last year
- Build out a 3D model of your chemical
compound, using one of the VSEPR
Geometries and aback bone
Due 21-Aug-2017
Significant Figures
Number
6.29 g
0.00348 g
9.0
1.0 10-8
100 eggs
100 g
= 3.14159
Count from left from
first non-zero digit.Adding and subtracting.
Use the number of decimal
places in the number with the
fewest decimal places.
1.14
0.6
11.676
13.416
Significant
Figures
3
3
2
2infinite
bad notation
various
13.4
Significant figuresMultiplying and dividing.
Use the fewest significant
figures.
0.01208 0.236
Rounding Off
3rd digit is increased if
4th digit 5
Report to 3 significant figures.
10.235
12.4590
19.75
15.651
= 0.512
= 5.12 10-1
UnitsS.I. Units
Length meter, m
Mass Kilogram, kg
Time second, s
Temperature Kelvin, K
Quantity Mole, 6.022×1023 mol-1
Derived Quantities
Force Newton, kg m s-2
Pressure Pascal, kg m-1 s-2
Eenergy Joule, kg m2 s-2
Other Common Units
Length Angstrom, Å, 10-8 cm
Volume Litre, L, 10-3 m3
Energy Calorie, cal, 4.184 J
Pressure
1 Atm = 1.064 x 102 kPa
1 Atm = 760 mm Hg
Homework16-Aug
Ch.1: 36, 37, 42, 46, 55
Bell Work17-Aug-2017
The boiling point of Hg is ~630K, is that an
intensive or extensive property?
How many nm3 are in 4.5L?
ObjectivesBe confident in the content of Ch. 1
Pre Lab for Green House Gasses Experiment
design
Essential Question
Speaking Metaphorically, at the end of the day who is
responsible for your education and what is achieved
during it?
Green House GassesCO2
H2O CH4 C2H2F4
Testing Green House Gasses
You will use 2.0L soda bottle, a cooking
thermometer, and a gas to examine the
relationship between gas content and
temperature.
As a class develop procedures, data tables,
etc. for the project.
Dry: Air, CO2, CH4, O2
H2O vapor: Air, CH4, CO2, O2
Chemical and Physical ∆Physical change in a substance doesn't change
what the substance is.
Chemical change where there is a chemical
rxn, a new substance is formed and energy
is either given off or absorbed
What would this be: mixing HCl and NaOH
Separations
Separating Mixtures
1_17
Substances to
be separated
dissolved in liquid
Pure
liquid
A B C
mixture
Chromatography
Temperature
Relative Temperatures
Essential QuestionsIf a student completes everything their teacher
asks of them, homework, extra studying,
participation in class, etc, should they be
guaranteed a grade of A or B? Why?
18Aug17Bell Work
Mary was working in a chemistry lab with a mixture of
chemicals that was 90% water and weighed 20kg. After
returning to the lab from a weekend break, she calculated
the mixture was now 50% water.
How much does the mixture now weigh?
For purposes of this puzzle, assume the non-water part of
the mixture was not affected by evaporation.
18.Aug.17Only relying on your memory, what is the
relationship between base units and nano,
for instance meter to nanometer?
Centimeter to nanometer?
Testing Green House Gasses
You will use 2.0L soda bottle, a cooking
thermometer, and a gas to examine the
relationship between gas content and
temperature.
As a class develop procedures, data tables,
etc. for the project.
Dry: Air, CO2, CH4, O2
H2O vapor: Air, CH4, CO2, O2
Bell Work 21.Aug.2017Make the following conversions and show the DA set up
I. How many mm is one lap around a 400m track?
II. If you could run the lap in 55sec. What speed
would your average speed be in km/hr?
III. What is the volume of a cube with sides of
4.5cm in liters?
IV. Start setting up your Green House Gas
experiment.
Essential QuestionsIf a student completes everything their teacher
asks of them, homework, extra studying,
participation in class, etc, should they be
guaranteed a grade of A or B? Why?
Volume
AgendaTest Green House Gases
Densityρ= m/V
m=V ρ V=m/ ρ
g/mL
Mass and volume are extensive properties
Density is an intensive property
Bell Work 19Aug2016What is the mass of a cube of osmium that is 1.25
inches on each side?
Have volume, need density = 22.48g/cm3
No Notes!
ConversionWhat is the mass of a cube of osmium that is 1.25
inches on each side?
Have volume, need density = 22.48g/cm3
AgendaGraph Green House Gases
PracticeWhich one of the following is the most
dense?
a. an object with a vol. of 3.91 x 10-24 nm3
and a mass of 7.93 x 10-14 ng
b. an object with a vol. of 139mL and a
mass of 93g
c. an object with a vol. of 0.00212 m3 and a
mass of 4.22 x 104 mg
d. an object with a vol. of 13 dm3 and a
mass of 1.29 x 103 µg
e. an object with a vol. of 2.5L and a mass
of 12.5kg
Wrong units
The Gimli Glider
Uncertainties• Systematic errors.
– Thermometer constantly 2°C too low.
• Random errors
– Limitation in reading a scale.
• Precision
– Reproducibility of a measurement.
• Accuracy
– How close to the real value.
Intensive and Extensive Properties
An intensive property is independent
of the amount of mass.
Examples:
Temp, pressure, specific volume, and density
The value of an extensive property varies directly
with the mass
Examples:
Mass and total volume
Lets try this again
PracticalUsing the equation
Zn(s) + HCl(aq) H2(g) + ZnCl2 (Aq)
and the formula V =nH2RT/P, how many mL
of H2 (g) are formed when 250.mg of Zn is
reacted with excess HCl?
(P = 748.mmHg, T = 21.0°C)
PracticalUsing the equation
Zn(s) + HCl(aq) H2(g) + ZnCl2 (Aq)
and the formula V =nH2RT/P, how many mL of H2 (g) are formed when
250.mg of Zn is reacted with excess HCl? (P = 748.mmHg, T = 21.0°C)
If the actual volume formed was____, what is
the percent yield of the reaction?
More Practicea. If there are six iggs per ogg and three oggs per id, how
many iggs are in four ids?
b. How many dozens of particles of dust are in 2.45
grams if each dust particle has a mass of 2.51 x 10-4 g?
c. Zinc has a density of 446 lb/ft3. What is the density of
zinc in g/cm3? (1lb = 0.454kg &1in = 2.54cm)
d. Perform the indicated operations and express the
answer with the proper number of significant digits.
28.1cm + 0.53cm + 75.321cm =
Bell Work22-Aug-2017
How many µg are in 0.0134 g?
What is the difference between precision
and accuracy? Give an example.
Essential QuestionsIf a student completes everything their teacher
asks of them, homework, extra studying,
participation in class, etc, should they be
guaranteed a grade of A or B? Why?
Testing Green House Gasses
Lets get going!
Safety goggles!
Data tables1
Dry: Air, CO2, CH4, CH2FCF3
H2O vapor: Air, CH4, CO2, CH2FCF3
Online Quiz Ch. 1We will do this one as a class so you can see
how to complete it.
Bell Work23-Aug
- Get a computer out, log in, open up your gas
temp data set in the spread sheet you used
Essential QuestionsIf a student completes everything their teacher
asks of them, homework, extra studying,
participation in class, etc, should they be
guaranteed a grade of A or B? Why?
Bell Work24-Aug
Get a computer out, log in, open up your gas
temp data set in the spread sheet you used
Essential QuestionsIf a student completes everything their teacher
asks of them, homework, extra studying,
participation in class, etc, should they be
guaranteed a grade of A or B? Why?
20
22.5
25
27.5
30
32.5
35
37.5
40
42.5
45
47.5
50
52.5
55
57.5
60
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
Tem
p (
C )
Time (s)
Green House Gases p3 2017Aug
CH2FCF3 Dry Temperature (°C)
CH2FCF3 wet
Air H2O
Dry CO2
Wet CO2
Wet CH4
Dry CH4
2 per. Mov. Avg. (Dry CH4)
Explanation of your Data
Using your graphs write an explanation of the
data. This should include a relationship
between temperature change and time as well
as rate of change for each treatment.
Based on your graphical data and analysis
account for the differences in ∆T and ∆T/ ∆t
assuming all other conditions were the same
(# of moles, testing locations/ conditions etc.)
Due typed up and emailed to Mr. Golden by 8:30am 25Aug
Explanation of your Data
Read “ Module 4 – Atmospheric Chemistry”
Using your graphical data, and what you have
read, account for the differences in
temperature change and rate for each of the
gases. You should use characteristics of each
gas and information from the reading (light
energy, heat, Lewis structure, symmetry, etc.)
to account for the graphical information.
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