1. Unit 1- Mass, Change, and Measurement Notes

2. What could we have measured?

3. Mass
What is mass? How can it be measured?

4. Unit 1- Mass and Change Lab

5. Mass and Change Lab Rubric

6. Mass and Change Lab
Goal- What happens to the mass of an object when they are changed?
Part 1: Change the shape of steel wool
Part 2: Melting ice
Part 3: Burning steel wool
Part 4: Dissolved sugar in water
Part 5: Dissolved Alka-Seltzer

7. Mass and Change Lab Rubric

8. Data Data: Change the shape of steel wool Mass Before Mass After
Prediction-
Mass Before
Mass After
Change
The lab groups should report their results on the paper posted on the board so that the entire class data can be recorded. Change should be recorded as + (for a gain) or – (for a loss).

9. Evaluation Evaluation: Change the shape of steel wool Before After
Particle Diagram
Before
After

10. Part 1: Change the Shape of Steel Wool Procedures:
Data:
Evaluation:
Part 2: Melting Ice
Procedure:
Data:
Prediction-
Mass Before
Mass After
Change
Prediction-
Mass Before
Mass After
Change
Evaluation:
Particle Diagram
Before
After
Particle Diagram
Before
After

11. Part 3: Burning steel wool Procedures:
Data:
Evaluation:
Part 4: Dissolving Sugar
Procedure:
Data:
Prediction-
Mass Before
Mass After
Change
Prediction-
Mass Before
Mass After
Change
Evaluation:
Particle Diagram
Before
After
Particle Diagram
Before
After

12. Part 5: Dissolved Alka-Seltzer Procedure:
Data:
Summary of Class Data:
Conclusion: 1. 2. 3.
Prediction-
Mass Before
Mass After
Change
Evaluation:
Particle Diagram
Before
After

13. End of Day

14. Unit 1- Mass, Change, and Measurement Notes

15. Law of Conservation of Mass
This law was developed by a French chemist named Antoine Lavoisier.
Lavoisier carefully measured the mass of the reactants and products when carrying out chemistry experiments.
He noticed that in every case, the mass of the reactants was ALWAYS equal to the mass of the products.

16. Law of Conservation of Mass
Historical Context- Year was 1776.
He was the first scientist to recognize and name the elements hydrogen and oxygen.
In 1789, he wrote the first
chemistry textbook.
Oxygen, nitrogen, hydrogen,
phosphorus, mercury, zinc and sulphur (list also included 'light' and 'caloric‘).
 He was executed, along with hundreds of other nobles, during the French Revolution.

17. Law of Conservation of Mass
Key Concept 1: The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction, it is conserved.
The mass of the reactants equals the mass of the products.
massreactants = massproducts

19. If video clip does not play please watch the following two hyperlinks

20. Conclusion Questions

21. End of Day

22. White Boarding Session
Each lab table will be assigned one experiment from lab.
On the whiteboard collaboratively draw a particle diagram that illustrates the law of conservation of mass for your assigned part.
Assign one person to explain the drawing and the other members need to be ready to answer questions from their classmates/teachers.

23. Conclusion Questions

24. End of Day

25. What is this Matter? Lab Notebooks are due Wednesday Safety Notes
Mass and Change Lab
Follow the rubric
Make sure procedures, data, and particle diagrams are done
Do not forget conclusion questions
NOT GRADED Mass, Change, and Measurement Notes
Point out thing in the room, everything that you point at is matter

26. Conclusion Questions

27. What is this Matter? Due Tomorrow!
Unit 1- Mass and Change Lab Whiteboarding Handout
Reflection- Just reflect
Today, you get your first set of practice problems.
Point out thing in the room, everything that you point at is matter

28. What is this Matter?
Point out thing in the room, everything that you point at is matter

29. What is this Matter?
Matter is anything that takes up space and has mass.
Water
Rocks
Air
Wood
Plastic
You
So what not matter?
Point out thing in the room, everything that you point at is matter

30. Matter is….. Key Concept 2: Matter is anything made of particles.
Matter has observable and measurable qualities.
Key Concept 3: Two basic types of properties of matter: physical properties and chemical properties.
Key Concept 4: All matter can undergo change: physical change or chemical change
Point out thing in the room, everything that you point at is matter

31. White Board
Properties
Change

32. Properties Key Concept 5: Physical properties
Observed with senses
Determined without destroying the matter
Key Concept 6: Chemical properties
Indicated how a substance reacts with something else.
If a reaction occurs a new substance will form.

33. Change Key Concept 7: Physical change- Key Concept 8: Chemical change-
No new substance (its particles are still the same)
A change in size, shape, or state
Key Concept 8: Chemical change-
A new substance is formed (its particle have “changed” and are not the same)
A change in physical and chemical properties.

34. Examples Chemical Properties Physical Properties Physical Change
Chemical Change

35. Salt Physical Property Chemical Property Physical Change
Chemical Change

36. Exit Pass: Physical(PC) or Chemical Change(CC)
Part 1: ____ Change shape
Part 2: ____ Melting ice
Part 3: ____ Burning steel wool
Part 4: ____ Dissolved sugar in water
Part 5: ____ Dissolved Alka-Seltzer

37. End of Day

38. Qual vs. Quant Key Concept 9
Qualitative data: deals with descriptions.
Quantitative data: deals with numbers
What was an example from our Mass and Change Lab of quantitative data?
Did the Mass and Change Lab have any qualitative data?

39. Qual vs. Quant What is Qualitative Data? Deals with descriptions.
Data can be observed but not measured.
Colors, textures, smells, tastes, appearance, beauty, etc.
Qualitative → Quality

40. Qual vs. Quant Take and oil painting for example.
Qualitative data includes:
blue/green color, gold frame
smells old and musty
texture shows brush strokes of oil paint
peaceful scene of the country
masterful brush strokes

41. Qual vs. Quant What is Quantitative Data? Deals with numbers.
Data which can be measured.
Length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc.
Quantitative → Quantity

42. Qual vs. Quant Take and oil painting for example.
Quantitative data includes:
picture is 10″ by 14″
with frame 14″ by 18″
weighs 8.5 pounds
surface area of painting is 140 sq. in.
cost $300

43. Units
Significant Figures: Crash Course
Stop at 3:45
Système Internationale d'Unités (SI) is an internationally agreed upon system of measurements.
A base unit is a defined unit in a system of measurement that is based on an object or event in the physical world, and is independent of other units.

44. Units (cont.)
Key Concept 10

45. Comparing Units of Volume
Key Concept 11: Volume measures the amount of space an object takes up, and is a derived SI unit (length).
The volume of a cube is V=length x width x height
How do you determine the volume of objects?

46. Comparing Units of Volume
Key Concept 13: Volume can be measured in cubic centimeters (cm3) using a ruler or in milliliters (mL) by using a graduated cylinder.
Key Concept 12: The volume of a cylinder is V= πr2 x height
What would the units be? Are they any other units that volume is measured in?

47. Quick Lab
mL and cm3
Goal: How are mL and cm3 related?
Data Tables:

48. Class Data Cylinder Cube Milliliter (mL) 2) 1) 4) 3) 5) 6) 7) 8) 9)
cubic centimeters (cm3)
Ruler/ equation
Milliliter (mL)
Graduated cylinder/ water displacement 1) 3) 5) 7) 9)
11)
13)
Cylinder
cubic centimeters (cm3)
Ruler/ equation
Milliliter (mL)
Graduated cylinder/ water displacement 2) 4) 6) 8)
10)
12)
Ask Kids

49. How can you minimize error?
Ask Kids

50. How can you minimize error?

51. Class Data Cylinder Cube Milliliter (mL) 2) 1) 4) 3) 5) 6) 7) 8) 9)
cubic centimeters (cm3)
Ruler/ equation
Milliliter (mL)
Graduated cylinder/ water displacement 1) 3) 5) 7) 9)
11)
13)
Cylinder
cubic centimeters (cm3)
Ruler/ equation
Milliliter (mL)
Graduated cylinder/ water displacement 2) 4) 6) 8)
10)
12)
Ask Kids

52. How are mL and cm3related?
Quick Activity
Goal: Compare the volume that are calculated using a rule with those measured using a graduated cylinder.
How are mL and cm3related?

53. End of Day

54. Yesterday Measurements can be: SI Units Qualitative Quantitative
Room #

55. How are mL and cm3related?
Quick Activity
Goal: Compare the volume that are calculated using a rule with those measured using a graduated cylinder.
How are mL and cm3related?

56. Today
Learn how to measuring using significant figures.

57. Often, precision is limited by the tools available.
Significant Figures
Often, precision is limited by the tools available.
Key Concept 14: The significant figures of a number are those digits that carry meaning contributing to its precision. When measuring significant figures include all known digits plus one estimated digit.

58. Socrative App
Room #

59. Learning Check
What is the length of the wooden stick?

60. Learning Check
What is the length of the red bar?

61. Learning Check
Please record your units in millimeters?

62. Meter Stick
Use the 4 sided meter stick and measure an object varies ways

63. So…
If you are using a classroom ruler, your measurements must go out to:
If you are using a classroom meter stick, your measurement must go out to:

64. Learning Check
Record the measurement using significant figures.

66. Closure Type: Socrative Exit Poll
Volume is not considered an SI unit. How did scientist choose to define volume?

67. End of Day

68. Daily Writing
Correctly record the following measurements using significant figures.
1) Length 3) Mass
2) Volume 4) Time

69. Redemption Time Cylinder Cube Milliliter (mL) 2) 1) 4) 3) 5) 6) 7) 8)
cubic centimeters (cm3)
Ruler/ equation
Milliliter (mL)
Graduated cylinder/ water displacement 1) 3) 5) 7) 9)
11)
13)
Cylinder
cubic centimeters (cm3)
Ruler/ equation
Milliliter (mL)
Graduated cylinder/ water displacement 2) 4) 6) 8)
10)
12)
Ask Kids

70. SI Units- Length
1792: French established a new system of weights and measures
1 m = distance from N. pole to equator ten-million
Then, in the 1870s: 1 m = distance between fine lines on Pt-Ir bar
Accurate copies sent around the world
Time and length linked

71. SI- Length The SI base unit for length is the meter (m).
A meter is equal to the length of the path travelled by light in a vacuum during a time interval of 1⁄299,792,458 of a second.

72. SI- Mass
The SI base unit of mass is the kilogram (kg), about 2.2 pounds

73. SI- Temperature The SI base unit of temperature is the kelvin (K).
Zero kelvin is the point where there is virtually no particle motion or kinetic energy, also known as absolute zero.
Two other temperature scales are Celsius and Fahrenheit.

74. Importance of Units
A train of length 2, weighing 200, travels from Denver to Santa Fe at 15. How long did the trip take? 

75. NO NAKED NUMBERS Importance of Units
This brings up the issue of units. In your math class, numbers by themselves are fine to work with, but in science a number without units is pretty useless.
NO NAKED NUMBERS
“NO STREAKING”

76. Length of purple tape in cm Length of cream tape in cm
Quick Demo
I need two groups of three volunteers that can measure using a meter stick (cm).
Number of trails
Length of purple tape in cm
Length of cream tape in cm 1 2 3

77. Scientific Notation
5.67 x 105         coefficient        base       exponent    In order for a number to be in correct scientific notation, the following conditions must be true:
The coefficient must be greater than or equal to 1 and less than 10.
The base must be 10.
The exponent must show the number of decimal places that the decimal needs to be moved to change the number to standard notation. 

78. Scientific Notation (cont.)
The number of places moved equals the value of the exponent.
The exponent is positive when the decimal moves to the left and negative when the decimal moves to the right.
800 = 8  102
=  10–5

79. Accuracy and Precision
Key Concept 15: Accuracy refers to how close a measured value is to an accepted value.
Key Concept 16: Precision refers to how close a series of measurements are to one another.
Pin the mitten on the kitten

81. Length of green tape in cm Length of cream tape in cm
Quick Demo
I need two groups of three volunteers that can measure using a meter stick (cm).
Number of trails
Length of green tape in cm
Length of cream tape in cm 1 2 3
Actual

82. Done SI Units Sig Figs Important of Units Scientific Notation
Accuracy vs. Precision
You have Unit 1A and Unit 1B Practice Problem.
Unit 1 Prove It Quiz is ??