1. Scientific Method, Skills and Safety
Scientific Literacy
Science Lab Safety
WHMIS, MSDS, HHPS
Observations vs. Inferences
Significant Digits/Figures
Scientific Notation
The Scientific Method
Metric Conversions

2. Teach With Fergy Preview File
Please enjoy this preview of your Power Point.
Some slides appear blank because they have been removed.
Other slides may have on them, this represents writing that has been removed.
Please note that the Entire Unit Package can also be purchased at a steep discount from my Store.

3. Scientific Literacy
Charlatans - a person who falsely pretends to know or be something in order to deceive people

4. Scientific Literacy
What is Scientific Literacy? Look it up.

5. This slide has been removed

6. Science Lab Safety
See how videos are embedded into the Power Point slides
Safety Video

7. Safety Challenge
Look at the picture given to you and list as many unsafe features of the lab as you can.

9. WHMIS
Stands for ____________ ____________ ____________ ____________ ____________
The purpose of WHMIS is hazard identification and product classification, ____________

10. This slide has been removed

11. MSDS Stands for ____________ ____________ ____________ ____________
Are available for ……………………………

12. This slide has been removed

13. Hazardous Household Product Symbols

14. All Possible HHP Symbols
Poisonous
Flammable
Explosive
Corrosive
Danger
Warning
Caution

15. Video has been removed

16. This slide has been removed

17. OBSERVATIONS AND INFERENCES
Observation: statement of facts and occurrences that are made using our senses and sometimes by measurement with scientific instruments.
e.g. The ……………………………
The temperature of your grade 9 teacher’s coffee is 80oC.
……………………………

18. OBSERVATIONS AND INFERENCES
e.g. ……………………………
……………………………
Your own examples

19. Try It Give 2 observations from the picture. Picture Removed
2. Give 2 inferences from the picture.

20. This slide has been removed

21. Significant Digits (Figures)
Significant digits represent the amount of uncertainty in a measurement. _______________
E.g. The length of something is between 5.2 and 5.3 cm. Suppose we estimate it to be 5.23 cm.

22. Significant Digits
The first 2 digits (5 and 2) are certain but the last digit (0.03) was estimated. Therefore, ____________

23. This slide has been removed

24. Significant Digits Rules
2) ____________ e.g m = 4 s.d., km/h = 4 s.d.

25. Significant Digits Rules
3) ____________ e.g. ……………………………..

26. This slide has been removed

27. Significant Digits Rules
5) All counting numbers have an infinite number of significant digits because we are certain of the exact number e.g. ____________
See how videos are embedded into the Power Point slides
Significant Digits

28. Scientific Notation

29. How far away is the nearest Star besides our Sun (Proxima Centauri)?
___________________ This number …………………….

30. This slide has been removed

31. Write the distance to Proxima Centauri in scientific notation.
km Where is the decimal point now? _______________ Where would you put the decimal to make this number be between 1 and 10?

32. 4.0,000,000,000,000.
……………………. ___________ When the original number is more than 1, the exponent is positive. The answer in scientific notation is ____________

33. This slide has been removed

34. Write 28750.9 in scientific notation.
x 10-5
x 10-4
x 104
x 105

35. Example Given: 289,800,000 Use: 2.898 (moved 8 places)
Answer:____________

36. This slide has been removed

37. ……………….. ____________ 2) ………………..
Write in PROPER scientific notation. (Notice the number is not between 1 and 10)
………………..
____________
2) ………………..

38. Write 531.42 x 105 in scientific notation.

39. We can also go the other way
Express ……………… in decimal notation. ____________ Express ………………in decimal notation.

40. This slide has been removed

41. Example
Given: x 10-4
Answer: ____________

42. Significant Digits and Scientific Notation
When trying to determine the number of significant digits within scientific notation we leave it the way it is and follow the same rules and pretend the x 10n is not there.
E.g.
x10-4 ____________
5.3x1015 ____________

43. This slide has been removed

44. The Scientific Method
Video has been removed

45. The Nine Steps of the Scientific Method
Questioning
Controlling Variables
Making a hypothesis
Planning
Performing
Observing
Analyzing
Conclusion
Communicating

46. 1) Asking a question Semi-formal ____________________ ………………..
E.g. Are ………………..

47. 2) Controlling the variables
Variables are factors that can affect the outcome of an investigation:
Independent variable – ____________________
Dependent variable – ____________________
3) Controlled/Standardizing variable – ______________
4) Control Group – ………………..

48. This slide has been removed

49. Practice
Patty Power Mr. Krabbs wants to make ……………….. What is the independent variable? _________________________ What is the dependent variable? _________________________ Which people are in the control group? _________________________

50. Variables Worksheet The worksheet link has been removed

51. 3) Making a hypothesis
A Hypothesis is a tentative answer about the outcome of an experiment
____________________
………………..
Can usually be derived directly from your original question
Must be feasibly testable

52. This slide has been removed

53. 4) Planning
Identify all your variables
………………..

54. Writing a procedure A procedure is a ____________________
Hints: Be specific, be exact, watch your language.
Try this:
In a group of 2, ………………..

55. 5) Performing the experiment
Follow procedures exactly, if procedures are unclear ask
____________________
Record which variables are being changed and how they are being changed
………………..

56. This slide has been removed

57. Graphing Rules for Graphing
1. Always give your graph a title in the following form: ____________
Let's say that you're doing a graph where you're studying the effect of temperature on the speed of a reaction. In this reaction ………………..
As a result, the title of your graph will be __________________
2. The x-axis of a graph is always your independent variable and the y-axis is the dependent variable. For the graph described above, ………………..

58. 3. Always label the x and y axes and give units. E. g
3. Always label the x and y axes and give units. E.g. temperature on the x-axis would be – ………………..
4. Make a line graph unless told otherwise but don’t connect the dots.
5. Most of the time, you do not connect the dots on your graph! Instead, ………………..
6. Make sure your data is graphed as large as possible in the space you've been given.

59. Examples of Graphing Let's see what's wrong with this graph:
___________

60. This slide has been removed

61. GRAPHING RULES CHECKLIST
All graphs made in this course must meet the requirements outlined in the following checklist. 1. ……………….. 2. Your ……………….. 3. The axes should be spread out enough to fill at least 2/3rds of the available space. 4. Title - ……………….. - ……………….. 5. Axes labels - written in pen - name of variable with units in brackets e.g. mass (kg) 6. ……………….. 7. Points – plot using either ‘ X ’ through the point or circle the point 8. ………………..

62. 8) Conclusion
___________
9) Communicating

63. Your Lab Reports **ALL MUST ……………….. ** Question: Hypothesis:
Variables:
Materials:
Procedure:
Results:
Conclusion:
**ALL MUST ……………….. **

64. This slide has been removed

65. Scientific Method Review Crossword
Crossword link has been removed

66. Metric Conversions

67. Metric and Unit Conversions
Metric and Unit conversions are necessary in science since results within experiments may be measured using different equipment. In order to accurately compare results, it is important that we ensure that the units on the measurements match up.
Also, ………………..

68. This slide has been removed

69. Conversions (1st Way) How many mm are in a m? ___________
How many mm are in 3.5 m?
? mm = 1000mm ………………..
3.5m m
? mm (3.5m) = 1000mm (3.5m)  ? = ………………..
3.5m m

70. This slide has been removed