Laboratory experiences and use
of your text, Addison-Wesley Chemistry, will aid you in learning
chemistry, and enrich your life through a better understanding of the complex
issues and choices you face in a scientific and technological society.
Students are to:
- Bring your covered textbook, notebook, lab book,
pencils, eraser, paper, 15 cm ruler and a 5 function, or more, nongraphing
calculator. Use pencils only in class.
- Keep a chemistry notebook with these sections:
reference, class notes, reading notes, homework and graded labs.
- Be knowledgeable of assignments, labs, and test and
quiz dates from the calendar.
- Complete sentences are used for all written work, with
a noun for the subject.
- Follow the posted Chemistry Lab and Classroom
Science is the result of honest observations made during experiments.
Study the lab. Most labs demonstrate the ideas discussed in preceding sections.
Determine the lab purpose so you may make proper observations as they occur.
Proper materials preparation and labeling and careful procedures lead to
improved results. Be honest in reporting your results. Lab write-ups will be
completed in the Lab Notebook. Each lab write-up is worth 100%. Points are
deducted when the following are missing:
- Sate your name, period, date, the lab name, and
purpose. (5 pt each)
- Use a pencil and ruler to neatly draw all lines in
tables and graphs. (5 pt)
- Title all graphs as to the relationship they display.
- Label every quantity expressed on both axes of graphs.
(1-2 pts, up to 20 pt)
- Chemical reactions are expressed in equations which
are legible, balanced, written on one line, and may note the state (s, l, aq,
g). (5-10 pt)
- Express numerical data in decimal scientific notation
where applicable. (5 pt)
- Calculations must follow this pattern:
- A word equation or model: calories m (t1 – t2) x
calorie per ° gram (5 pt)
- Substitute values and labels: calories = 40g (32°C-24°C)
x 1 cal/° gram (5 pt)
- Calculated answer with labels and notation: calories
= 3.2 x 10¹ cal (5 pt)
- Complete sentences are used with a noun for the
subject. (5 pt)
are due by the tardy bell at the beginning of the period.
excused absences may follow a lab make-up with your teacher with one week of
your return to class. The lab write-up will be submitted for grading at the
beginning of the class period following the make-up. Keep your graded work in a
safe place to verify scores and earn extra credit.
- Be on time, in class and prepared; do your best,
respect, do not disturb others.
- Store personal items and backpacks on the shelf under
the lab bench at all times.
- Stay in your area. Only the designated leader may
leave to get or return materials.
- Study, listen to and follow directions. Ask questions after
- During lab work tie back long hair, clothing or
jewelry. Wear safety goggles and lab aprons. Never handle any equipment
unless you have specific permission and knowledge of its use. Never eat or
drunk in the laboratory, never drink from the lab glassware or tase any
- Use only those chemicals needed in the activity. Keep
all lids closed when a chemical is not being used. Never use broken or
chipped glassware. Report spills, breakage or accidents to your teacher
immediately. Dispose of all chemicals as instructed by your teacher. To
avoid contamination, never return chemicals to their original containers
unless directed to do so. Dispose of all organic solvents in the organic
waste container in the lab preparation room; do not pour them down the sink.
- Know how to light and operate a Bunsen burner. Keep
all materials away from flame. Never reach across a flame or heat any
chemical that you were not instructed to heat. Never heat a liquid in a
closed container or leave a lighted burner unattended. Always point a test
tube or other open container away from you and others.
- When instructed to note an order during an experiment,
gently wave your hand over the container and direct some fumes toward your
- Be especially careful with acids or bases. Should any
chemical get on your skin or clothing immediately rinse with water and
notify teacher. Wash your hands before and after each experiment.
- When an experiment is completed, clean up your work
area and return all equipment to its proper place.
Do your work. Honesty is
required on your assignments. Dishonesty earns a zero.
Grades are recorded as percentages and calculated as follows:
Quizzes 20% C
I have read and understand our
class procedures. ______________________________________
(Name, Date, Book #)