CHEMISTRY
CATALYSTS
Fall 2013
What is Chemistry?
Study of matter and change
(thus the title of the text book)

Essential Vocabulary
Chemistry
Substance
Mass
Weight
Model
Qualitative data
Quantitive data
Scientific Method
Hypothesis
Experiment
Independent Variable
Dependent Variable
Control
Conclusion
Theory
Scientific Method
1.
2.
3.
4.
5.
6.
7.
8.
9.
Define the problem
Find background information
Create a hypothesis
Plan a procedure to test the hypothesis
Experimentation
Observations
Record data collected
Analyze data
Make a conclusion
Using the Scientific Method
Following Instructions

Glass puzzle
 Can
you arrange the glasses so that they
alternate: full, empty, full, empty, full, empty?
 Rules:
You can only touch one glass!
Working Together






String Handcuffs
Grab a 3 foot piece of string. Tie knots in each
end big enough to slide over your wrists.
Find a partner. Oldest person is A. Youngest is B.
Person A: Put on your handcuffs.
Person B: Wrap your string around
A’s string. Put on your handcuffs.
Objective: Free yourself without
removing the strings from your wrists.
Summarizing (3 minutes)





Of the following important principles we will
be using in class, which will be the hardest for
you to master:
(a) following instructions,
(b) observing, or
(c) working together?
Explain your answer using 4 sentences.
Catalyst (3 minutes)

8/8/13
Safety Rules
EQ: What are the
proper safety
procedures?

What are some
unsafe behaviors
in the picture?
CHEMISTRY LAB
SAFETY RULES
Proper Attire



Safety goggles must be worn during chemistry
experiments at all times.
Wear sensible clothing (nothing expensive, fuzzy,
or flammable) and enclosed shoes.
Tie back long hair.
Heating Rules



Keep burners in the middle of
the lab table, not on the edge.
When heating liquids in test
tubes, never point the tube
toward yourself or anyone else.
Never heat the test tube directly
at the bottom but tilt the tube
and heat it gently between the
bottom of the tube and the top
of the liquid.
Lab Hazards



Follow instructions carefully.
Know the safety hazards of
each experiment before
starting.
Do not perform unauthorized
experiments.
Only work in the laboratory
when supervised by an
instructor.
Keep it Clean



Keep tabletops clean.
Return all equipment to its original location
before leaving the lab.
Clean all spills immediately.
Accidents & Breakages



Report all accidents, no matter how minor, to
the instructor.
If you break something made of glass, let Ms.
Granville know. Do not touch the glass!
Broken glass goes in the glass box, not in the
trash!
Contamination



Never return chemicals to bottles of their origin.
If you have excess, give it to another student or
throw it away.
Check labels on containers twice to make sure
you use the right chemical and of the correct
concentration.
Dispose of chemicals in proper receptacle.
Contamination



Do not stick objects into bottle except spatula or
dropper provided for that bottle.
Do not set the spatula or dropper down on the
counter (you may contaminate it).
Keep each spatula or dropper with the proper
bottle.
Ingestion

Never put anything in your mouth while in the
lab (including chemicals, solutions, equipment,
cigarettes, food, drink, water or gum). Put all
food and drinks in your bag.
Toxicity



Always add concentrated acids or bases to water,
never water to concentrated acids or bases.
Use fume hoods when noxious fumes may be
present in an experiment
Never smell chemicals! Waft them.
 wafting
Emergencies


Know the locations and operating instructions
for the fire extinguishers, fire blankets, fire
alarms, first aid kit, eye washes and showers.
Wash eyes for at least 15 minutes.
Getting Help



If you need help during lab, raise your hands
and yell, “Emergency!”
Ms. Granville will push the white button if
assistance is needed.
If Ms. Granville is unable to push
the button, push it and say
“D Delta 202, Ms. Granville”
to get assistance.
Evacuation

In case of an emergency where we have to
evacuate, proceed out the nearest exit, to the
left to the end of the hall, and down the stairs
to the outside.
Safety Review
Bottom Line:
You are responsible for your
own safety and for the safety
of those around you.
BE CAREFUL!
Catalyst (5 minutes)

8/13/13 Exploring Volume
EQ: What units of measurement will
I be using in chemistry?

How much of the water in the
graduated cylinder will fit in the cube?



Predict
Observe
Analyze
Identifying Lab Equipment


Split a piece of paper
vertically into 5 columns.
Label the columns:
 Name
 Drawing
 Possible
use
 Actual use
 Units
Name
Drawing
Possible use
Actual use
Units
Identifying Lab Equipment

1)
2)
3)
4)
5)
6)
7)
Use observations to draw and guess the
purpose of:
Balance
Beaker
Bunsen burner
Erlenmeyer flask
Goggles
Graduated Cylinder
Hot plate
8)
9)
10)
11)
12)
13)
14)
Pipette
Ring stand
Scoopula
Stirring rod
Test tube
Thermometer
Tongs
Balance


Actual use: record the mass of an object
(mass = how heavy an object is)
Units: grams (g)
Beaker


Actual use: used to hold and/or heat liquids,
not for measuring liquids
Units: milliliters (mL)
Bunsen burner


Actual use: used for heating objects, light with
a flint lighter
Units: kilojoules (kJ)
Erlenmeyer flask


Actual use: Used to hold and/or heat liquids,
not for measuring
Units: milliliters (mL)
Goggles


Actual use: to protect eyes from chemical
splashes and flying glass
Units: none
Graduated Cylinder


Actual use: used for measuring liquids
Units: milliliters (mL)
miniscus
Hot plate


Actual use: used for heating liquids
Units: kilojoules (kJ)
Pipette


Actual use: used to measure and transfer
liquids from one container to another
Units: milliliters (mL), drops
Ring stand


Actual use: used to hold objects or equipment
above the lab bench (example: heating)
Units: none
Scoopula


Actual use: used to transfer solids from one
container to another
Units: none
Stirring rod


Actual use: used for stirring solutions
Units: none
Test Tube


Actual use: used for holding small amounts of
liquids
Units: milliliters (mL)
Thermometer


Actual use: used to measure average kinetic
energy of molecules (aka temperature)
Units: degrees Celsius (˚C)
Tongs


Actual use: Used to pick up hot objects like
beakers or crucibles
Units: none
Summarizing: 20 Questions

Ask your classmates to help you figure out the
mystery lab equipment.
Graduated cylinder
Balance
Pipette
Scoopula
Summarizing: 20 Questions

Ask your classmates to help you figure out the
mystery lab equipment.
Erlenmeyer flask
Ring stand
Tongs
Thermometer
Catalyst (3 minutes)


8/21/13 Practice with unit conversions
EQ: How do you change from one unit of
measurement to another?

1.
2.
3.
4.
Convert the following measurements:
0.0087 m = ?????? mm
8.7 mm
348210 cm = ????? km
3.4821 km ~ 3.5 km
2150 mL = ????? L
2.15 L
91900000 mg = ?????? kg 91.9 kg
The Queen of England
200 POINTS
Hillary
Lady
Clinton
Gaga
100 POINTS
100 POINTS
Sara Palin
U.S. Women’s
Michelle Obama
Soccer Team
50 POINTS
50 POINTS
50 POINTS
Science
Equipment:
Part 1
Tongs
200 POINTS
Erlenmeyer Goggles
Flask
100 POINTS
100 POINTS
Thermometer
Ring Stand
Test Tube
50 POINTS
50 POINTS
50 POINTS
Science
Equipment:
Part 2
Bunsen burner
200 POINTS
Stirring Rod
100 POINTS
Beaker
50 POINTS
Balance
100 POINTS
Graduated
Cylinder
50 POINTS
Hot Plate
50 POINTS
Catalyst (5 minutes)
8/12/11 Accuracy & Precision
EQ: What is the difference between accuracy &
precision?
Who was the best darts player?
1
2
3

Explain in three to four sentences.
Safety Contracts



No safety contract = No lab
Open toed shoes = No lab
Alternate assignment is on board. Books are
on the bookcase.
Lab Corrections

You will likely be sharing chemicals with other
groups at your table. You have 4 beakers to be
SHARED BY BOTH groups.
 Get


50mL instead of 25mL of red, yellow, & blue.
Do not take any materials from the front table
back to your table.
Green = Yellow (my bad)
Lab Reminders

Don’t contaminate chemicals.
 Rinse
graduated cylinders each time.
 If you pour too much, don’t return it to the
original container. Give it away or pour it down
the sink.
miniscus


Read the bottom of the miniscus,
not the top when using a
graduated cylinder.
Use your beakers to get the red,
blue, and yellow, not your
graduated cylinder.
Lab Reminders

Don’t break stuff!
 Test

tubes will fall out the side of the rack.
Use the correct equipment for the job.
 Beakers
= holding
 Graduated cylinders = measuring
Special Note for some

If you have a test tube rack that says
“Too Small” on the side, your red solution
will not fit in test tube A. Use an extra
beaker for A instead.
Cleanup
1.
2.
3.
4.
5.
6.
Remove all tape.
Rinse and dry (as best you can) all glassware.
Return beakers and graduated cylinders to the
aluminum pan.
Return test tubes to the racks.
Dry off your lab station.
Return goggles to the drawers.