CollegePrep Chemistry

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College-Prep Chemistry

• Chris Schrempp, B.Sci, Pharm.D, M.Ed
• Website
• drschrempp.com

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Expectations

• This is a college prep course. What does that
  mean?
• Prep (informal for prepare)
• to make ready beforehand for a specific purpose
• to lead up to
• to make oneself ready

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Expectations

• This course requires a certain degree of
  dedication, motivation and maturity.
• Education has become standards driven.
• Your future success is dependent upon your
  mastery and performance in these standards.
• My task is to facilitate your learning. In other
  words, I can guide, clarify, and lead you. But
  only you can learn.

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Class Orientation, Rules

• Be in your assigned seat when the tardy bell
  rings. The tardy policy is strictly enforced.
• Students dropped on
• 4th absence
• 7th tardy (2 tardies 1 absence)
• 2. Bring proper materials to class pen, pencil,
  notebook, calculator. I will not be providing
  these.
• 3. Obey all school rules in class and in
  laboratory.
• 4. Make wise use of class time. No one will be
  allowed to inhibit the learning or safety of
  others.

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Class Orientation, Rules

• Bathroom breaks only after lectures. Only one
  student allowed out of the room at a time.
• Class is out when I say you may leave. Do not
  stand or get out of your seat until I release
  you.
• NO CD, MP3, IPOD, PSP, CELL PHONES, SMART PHONES,
  or other such electronic devices allowed in
  class. If I see any of these, I will confiscate
  them and turn them in to the Dean. NO EXCEPTIONS.

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Class Orientation, Rules

• Required materials
• Pens, pencils
• Composition Book (for notes)
• Scientific calculator
• Safety Glasses or Goggles (purchase at Home
  Depot, Lowes, Target, etc., in tools)

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Class Orientation, Rules

• Usual Class Schedule
• Tardy bell all in seats
• (15 min) Roll, Warm-up activity usually a
  problem or question on screen
• (30-40 min) Lecture
• (10-15 min) Lecture demonstration or activity
• (30-40 min) Worksheet, assignment
• (15 min) Break
• (30-40 min) Lecture
• (40-50 min) Lab
• Homework

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Class Orientation, Rules

• Expectations
• You are REQUIRED to take notes during all
  lectures. I may collect your notebook AT ANY
  TIME
• Exam every Friday over that weeks material
• Approximately one lab per day.
• I will tell you if you need to bring your book.
  Otherwise you may leave it at home for homework.

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Class Orientation, Rules

• My website get to know it
• It contains
• Online grade check
• Worksheets, due dates, powerpoint slides,
  standards, labs, tutorials, links, etc.
• http//drschrempp.com/

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• A Few Pearls of Wisdom
• This class is an elective. You are taking it
  voluntarily in preparation for college. My
  expectations of you are that you will act
  accordingly and maturely.
• Chemistry can be difficult. To succeed will
  require attention in class, completion of
  assignments, and self study.
• You will have to work hard to make this class
  educationally valuable. I work hard to make it
  exciting and interesting also.
• If you are in here just to have fun you are
  destined to fail.

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Ugh. Why do we have to take notes?

• To help identify the main ideas of the lecture.
• To learn and retain the ideas and concepts
• To have a record of the information that may not
  be available elsewhere.
• To keep track of what is on the test
• To have information required to complete
  assignments
• To sharpen skills required for college

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Note-taking Tips

• Limit yourself to writing down main ideas,
  content, and information
• Abbreviate as much as possible
• Dont try to write everything down
• Be prepared at the beginning of class. I will
  not wait for you once I start
• If you cant keep up, change your style.

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Note-taking Tips

• Research indicates that 80 of new material can
  be recalled if you review notes within the first
  24 hours of presentation
• Important (and testable) information on
  powerpoint slides will have a marker, something
  like

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Lab Equipment
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Beaker
Beakers hold solids or liquids that will not
release gases when reacted or are unlikely to
splatter if stirred or heated.
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Erlenmeyer Flask
Erlenmeyer flasks hold solids or liquids that may
release gases during a reaction or that are
likely to splatter if stirred or heated.
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Florence Flask
Rarely used in first year chemistry, it is used
for the mixing of chemicals. Narrow neck prevents
splash exposure.
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Graduated Cylinder
A graduated cylinder is used to measure volumes
of liquids.
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Gas Collecting Bottle
We use gas collecting bottles when large volumes
of gases are produced, and must be collected by
the displacement of water.
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Test Tubes
13 x 100 mm test tubes
Ignition tube
10 x 75 mm test tubes
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Test Tube Holder
A test tube holder is useful for holding a test
tube which is too hot to handle.
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Test Tube Brushes
Test tube brushes are used to clean test tubes
and graduated cylinders.
Forcing a large brush into a small test tube will
often break the tube.
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Test Tube Racks
Test tube racks are for holding and organizing
test tubes on the laboratory counter. Plastic
racks may melt in contact with very hot test
tubes.
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Rubber Stoppers
Rubber stoppers are used to close containers to
avoid spillage or contamination.
Containers should never be heated when there is a
stopper in place.
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Spot Plates
Spot plates are used when we want to perform many
small scale reactions at one time. We will use
these many times during the year.
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Watch Glass
A watch glass is used to hold a small amount of
solid, such as the product of a reaction.
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Glass Stir Rod
A glass rod is used to manually stir solutions.
It can also be used to transfer a single drop of
a solution.
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Medicine Dropper
A medicine dropper is used to transfer a small
volume of liquid (less than one mL).
On top of each medicine dropper is a rubber bulb
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Litmus Paper
Red litmus paper is used to identify bases.
Blue litmus paper is used to identify acids.
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Forceps
Forceps (or tweezers) are used to pick up small
objects.
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Funnel
A funnel is used to aid in the transfer of liquid
from one vessel to another.
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Mohr Pipet
A Mohr pipet measures and delivers exact volumes
of liquids.
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Wash Bottle
A wash bottle has a spout that delivers a wash
solution to a specific area. Distilled water is
the only liquid that should be used in a wash
bottle.
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Weighing Boat
Weighing boats are used to weigh solids that will
be transferred to another vessel.
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Spatulas
Spatulas are used to dispense solid chemicals
from their containers.
Chemicals should never be transferred with your
bare hands.
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Beaker Tongs
Beaker tongs are used to move beakers containing
hot liquids
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Bunsen Burner
Bunsen burners are used for the heating of
nonvolatile liquids and solids.
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Evaporating Dish
The evaporating dish is used for the heating of
stable solid compounds and elements.
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Crucible
Crucibles are used for heating certain solids,
particularly metals, to very high temperatures.
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Clay Triangle
The clay triangle is used as a support for
porcelein crucibles when being heated over a
Bunsen burner.
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Crucible Tongs
For handling hot crucibles also used to pick up
other hot objects. NOT to be used for picking up
beakers!
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Glass Plates
Glass plates provide a surface for semi-micro
scale experiments, such as drop reactions and
testing of acids and bases.
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Triangular File
Triangular files are used primarily to cut glass
rod, a skill that your instructor will share with
you when it becomes useful.
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Ringstands and their Components
Ringstands are a safe and convenient way to
perform reactions that require heating using a
Bunsen burner.
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Ringstands and their ComponentsIron Rings
Iron rings connect to a ringstand and provide a
stable, elevated platform for the reaction.
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Ringstands and their ComponentsUtility Clamps
Utility clamps are used to secure test tubes,
distillation columns, and burets to the ringstand.
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Ringstands and their ComponentsDouble Buret
Clamps
Double Buret clamps are used to burets long
graduated tubes used in titration.
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Ringstands and their ComponentsWire Gauze
Wire gauze sits on the iron ring to provide a
place to stand a beaker.
On older wire gauze, the white material is
asbestos!
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Pressed Fiber Pad
A 4 x 4 square of ceramic fiber, it provides a
surface for hot beakers so that the beaker does
not come in contact with a cold countertop and
shatter.
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Strikers
Strikers are used to light Bunsen burners.
The flints on strikers are expensive. Do not
operate the striker repeatedly just to see the
sparks!