FTCE Chemistry SAE
Preparation Course
Session 5
Lisa Baig
Instructor
Session Norms
• Respect
– No side bars
– Work on assigned materials only
– Keep phones on vibrate
– If a call must be taken, please leave the
room to do so
Course Outline
Session 1
Review Pre Test
Competencies 1 & 2
Session 2
Competency 5
Session 3
Competency 3
Session 4
Competency 4
Session 5
Competencies 6, 7 and 8
Post Test
Chemistry Competencies
1.
2.
3.
4.
5.
Knowledge of the nature of matter (11%)
Knowledge of energy and its interaction with matter (14%)
Knowledge of bonding and molecular structure (20%)
Knowledge of chemical reactions and stoichiometry (24%)
Knowledge of atomic theory and structure (9%)
6. Knowledge of the nature of science
(13%)
7. Knowledge of measurement (5%)
8. Knowledge of appropriate laboratory
use and procedure (4%)
The Scientific Method
Parts Of An Experiment
• Constant
– The elements of an experiment that remain
unchanged throughout the duration of the
trials
• Control
– A part of the experiment that does not have
the independent variable applied to it. (Think
Comparison)
• Independent Variable
– The variable that is applied to the experiment,
causes a change in the dependent variable
• Dependent Variable
– The variable that is measured in the
experiment.
Types of Data
• Qualitative Data
– Qualities
– Descriptive
• Quantitative Data
– Numbers
– Counted or Estimated
Scientific Data
• Accurate
– Data collected are within a close range of an
accepted or correct value
• Precise
– Data collected are within a close range of
each other
• Systematic Error
– Differences in data collection that can be
predicted theories, laws or technology
application
• Random Error
– Differences in data collection that result from
human error or environmental variances
Parts of an Experiment
• Experimental evidence
– Data collected from an experiment that
can be used to validate results from
repeated trials
• Models
– A visual or mathematical aid created
using repeated experimental data to
predict or represent items in nature
Parts of Scientific Methodology
• Observations
– Data collected using the senses during or before an
experiment
• Assumptions
– Similar to Hypotheses, a guess about a situation in
nature
• Hypotheses
– An educated guess about a problem based upon
observations and background information
• Theories
– A statement that consistently predicts a pattern in
nature
• Laws
– A mathematical statement that consistently
predicts a pattern in nature
Areas of Scientific Study
• Basic scientific research
– No particular goal in mind
– Research to learn more about nature
• Applied research
– Specific goal or desired product
– Research to acquire desired results
• Technology
– Tools used within scientific study to gain
insight and collect further data
Chemistry Lab Clean Up
• After any experiment you
should consult your
school’s MSDS reference
sheets to determine the
safest/legal way to dispose
of any chemical waste.
Chemistry Lab Equipment
• Micropipette
– Used to dispense
small amounts of
liquid (<1mL)
Chemistry Lab Equipment
• Erlenmeyer flasks
– Receptacle for acid
during titrations
– Ideal for mixing,
conical shape
contains liquid
Chemistry Lab Equipment
• Graduated Cylinder
– Measuring specific
volumes for
experimental use
Chemistry Lab Equipment
• Beaker
– Pouring liquids
– Stirring liquids
Chemistry Lab Equipment
• Crucible
– Heating solids
• dehydration
Chemistry Lab Equipment
• Clay Triangle
– Holds crucible over
flame
Chemistry Lab Equipment
• Bunsen burners
– Heat source
– Many experiments
Chemistry Lab Equipment
• Test tubes
– Small scale
mixtures that do
not require
agitation
Chemistry Lab Equipment
• Hot plates
– Heat source
– More specific uses
Chemistry Lab Equipment
• Micropipette wells
– Small scale labs,
using pipetted
liquids
Chemistry Lab Equipment
• Vacuum Pump
– Used to
demonstrate
effects of Pressure
on gas laws
Chemistry Lab Equipment
• Buret
– Titrations
• Buret Clamp
– Hold the Buret to
the ring stand
• Ring Stand
– To hold any variety
of clamp or ring in
an experiment
Chemistry Lab Facilities
• Fume hood
– Used to
temporarily house
chemicals which
may have noxious
or toxic fumes
associated with
them
Chemistry Lab Facilities
• Gas Jets
– Attach to bunsen
burners
– In the system
shown here, both
jets are off
– Teacher should
have control of
flow of gas within
classroom
Chemistry Lab Facilities
• Goggle Cabinet
– All students will
wear goggles in
ANY experiment
– Goggle cabinets
contain UV
sterilization
Chemistry Lab Facilities
• Safety Shower
– Rapid release of
large volume of
liquid
– Designed to quickly
wash away caustic
chemicals from
entire body
• Eye Wash Stand
– Washes eyes in case
of exposure
• But if they wore the
proper goggles…
Chemistry Lab Facilities
• Fire Blanket
– Flame retardant
material
– Drape and hold
tightly over
affected area
Break Time
Take a 10 minute Break
When we return…
POST TEST
Post-Test
• You will have one and a half hours to
complete the post-test
• This test will include examples from
all the competencies.
• Scores will be posted on the Quia
Website tomorrow as a class file.
• Also to be posted- a reference key of
the correct answers AND which
competency and skill were covered
for each question.
Good Luck!
When finished, turn in test to
instructor, and you may leave.