1. FTCE Chemistry SAE Preparation Course Session 5 Lisa Baig Instructor

2. 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

3. 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

4. Chemistry Competencies 1.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%)

5. The Scientific Method

6. 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.

7. Types of Data Qualitative Data – Qualities – Descriptive Quantitative Data – Numbers – Counted or Estimated

8. 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

9. 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

10. 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

11. 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

12. 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.

13. Chemistry Lab Equipment Micropipette – Used to dispense small amounts of liquid (<1mL)

14. Chemistry Lab Equipment Erlenmeyer flasks – Receptacle for acid during titrations – Ideal for mixing, conical shape contains liquid

15. Chemistry Lab Equipment Graduated Cylinder – Measuring specific volumes for experimental use

16. Chemistry Lab Equipment Beaker – Pouring liquids – Stirring liquids

17. Chemistry Lab Equipment Crucible – Heating solids dehydration

18. Chemistry Lab Equipment Clay Triangle – Holds crucible over flame

19. Chemistry Lab Equipment Bunsen burners – Heat source – Many experiments

20. Chemistry Lab Equipment Test tubes – Small scale mixtures that do not require agitation

21. Chemistry Lab Equipment Hot plates – Heat source – More specific uses

22. Chemistry Lab Equipment Micropipette wells – Small scale labs, using pipetted liquids

23. Chemistry Lab Equipment Vacuum Pump – Used to demonstrate effects of Pressure on gas laws

24. 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

25. Chemistry Lab Facilities Fume hood – Used to temporarily house chemicals which may have noxious or toxic fumes associated with them

26. 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

27. Chemistry Lab Facilities Goggle Cabinet – All students will wear goggles in ANY experiment – Goggle cabinets contain UV sterilization

28. 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…

29. Chemistry Lab Facilities Fire Blanket – Flame retardant material – Drape and hold tightly over affected area

30. Break Time Take a 10 minute Break When we return… POST TEST

31. 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.

32. Good Luck! When finished, turn in test to instructor, and you may leave.