ftce chemistry sae preparation course session 5 lisa baig instructor
TRANSCRIPT
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 OutlineSession 1
Review Pre TestCompetencies 1 & 2
Session 2Competency 5
Session 3Competency 3
Session 4Competency 4
Session 5Competencies 6, 7 and 8
Post Test
Chemistry Competencies1. Knowledge of the nature of matter (11%)2. Knowledge of energy and its interaction with matter (14%)3. Knowledge of bonding and molecular structure (20%)4. Knowledge of chemical reactions and stoichiometry (24%)5. 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%)
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.
MSDS
Chemistry Lab Equipment
• Erlenmeyer flasks– Receptacle for acid
during titrations– Ideal for mixing,
conical shape contains liquid
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
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.