FTCE Chemistry SAEPreparation Course

Session 5

Lisa BaigInstructor

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%)

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.

MSDS

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.