1. Unit 1- Mass, Volume & States of Matter Notes
In relationship to density

2. Quick Review
Key Concept 1: Mass is a numerical value that represents the number of particles in a sample. Units ? Key Concept 2: Volume is a numerical value that represent the 3 dimensional space that particle take up.

3. Quick Review
Key Concept 3: Density expresses the proportional relationship between mass and volume of the substance. Density is the mass (g) per unit volume. Be careful with the word “per”

4. Quick Review
Given a graph of mass vs. volume of varies substance, the given slopes are the density of that substance.

5. Quick Review
Key Concept 4: Density is a characteristic physical property of matter and it can be used to help identity an unknown substance.

6. Speed Dating
Answer Question 1 Collaboratively Taking first--- writing later (extra time- answer question 9)

7. Speed Dating
Answer Question 2 & 3 Collaboratively Taking first--- writing later (extra time- answer question 9)

8. Speed Dating
Answer Question 4a & 4b Collaboratively Taking first--- writing later (extra time- answer question 5)

9. Speed Dating
Answer Question 4c & 4d Collaboratively Taking first--- writing later (extra time- answer question 6a)

10. Cross Multiplication Review

11. What is a proportion
Key Concept 5: A proportion is a name we give to a statement that two ratios are equal. It can be written in two ways: two equal fractions, or, using a colon, a:b = c:d

12. Density is a proportion
If a question is asking to solve for density it is asking for a proportion of mass that equal to 1 unit of volume. Remember- Density expresses the proportional relationship between mass and volume of the substance.

13. Density Calculations
Key Concept 6: A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density?
You have a rock with a volume of 15cm3 and a mass of 45 g. What is its density?

14. Density Calculations
Key Concept 7: What is the weight of the ethyl alcohol that exactly fills a mL container? The density of ethyl alcohol is g/mL.

15. Speed Dating
Answer Question 4e & 4f Collaboratively Taking first--- writing later (extra time- answer question 6b)

16. Class time to finish Accepted Values Tecaform- 1.40 g/ml
Nylon g/ml

17. End of Day

18. Percent Error

19. Get out your periodic tables
Percent Error
Key Concept 8: Percent error expresses error as a percentage of the accepted value.
Get out your periodic tables

20. Percent Error
Key Concept 9: A substance has an accepted density of 2.00 g/L. You measured the density as 1.80 g/L. What is the percent error? A B C D

21. Percent Error

22. Practice Problems Practice Problems C- Conceptual Density
Questions 7 and 8 are percent error practice.
Practice Problems D- Calculations on Density

23. End of Day

24. Particle diagram illustrating density
What substance has the greatest density and how do you know?

25. Density Must Knows
The density of a substance is not dependent on the amount. Gold 19.3 g/ml

26. Particle diagrams of state of matter?
17.31 g/cm g/cm3

27. Remembering the first day of school
“Knowing the volume of the gases would be helpful.” anonymous chemistry student How can we determine the density of an unpressurized gas?

28. Particle diagrams of state of matter?

29. Particle diagram illustrating density

30. Water is Weird

31. Water is Weird
Key Concept 10: Water is weird because water is the only substance that is more dense in a liquid state than in a solid state.

32. What gas could we use?

33. Key Concept 11: Desk Pod Discussion Questions
To determine the density of carbon dioxide what variables would we need to collect?
Should this experiment be done in an open or closed system? Explain why?
How can we determine the mass of the carbon dioxide produced?
How can we determine the volume of carbon dioxide produced?

34. Key Concept 12: Data for the Density of a Gas
Hours
Mass of CO2 (grams)
Volume of CO2 (ml)
Density (g/ml) 1 2 3 5 6 7

35. Exit Pass
Joshua uses his thermometer and finds the boiling point of ethyl alcohol to be 75C. He looks in a reference book and finds that the actual boiling point of ethyl alcohol is 80C. What is his percent error? A B C D

36. End of Day

37. Key Concept 11: Desk Pod Discussion Questions
To determine the density of carbon dioxide what variables would we need to collect?
Should this experiment be done in an open or closed system? Explain why?
How can we determine the mass of the carbon dioxide produced?
How can we determine the volume of carbon dioxide produced?

38. Aprons and Safety Glasses
Density of a Gas
Start Lab…Get going….
Be productive
Aprons and Safety Glasses

39. Key Concept 12: Class Data for the Density of a Gas
Lab Table
Mass of CO2 (grams)
Volume of CO2 (ml)
Density (g/ml) 1
0.21 g
96.8 ml
g/ml 2
0.14 g
99.6 ml
g/ml 3
0.16 g
118.6 ml
g/ml
4/5
0.29 g
181.8 ml
g/ml 6
0.33g
176.8 ml
g/ml 7
0.35 g
205.2 ml
g/ml

40. Carbon Dioxide Accepted Values
The accepted value of the density of carbon dioxide gas is g/ml. The accepted value of dry ice (solid carbon dioxide) is 1.5 g/ml.

41. Particle Diagram for States of Matter
Key Concept 13: Solid vs. Gases at the particle level (volumes equal)

42. End of Day

43. Unit 1- Physical Properties of Matter is Wrapping Up
Monday (Today)- Finish Notes for Unit 1! And start on Study Guide if time allows.
Tuesday- Class time for Study Guide and Review.
Prove It Quiz 2 Due
Wednesday- Study Guide Review
Lab Notebooks Due
Mass and Change Notes
Mass and Volume Lab
Mass, Volume, and State of Matter Notes
Thursday- Unit 1 Exam (Summative Assessment)

44. Quick Demos Key Concept 14: Carbon dioxide vs. Air Demo
Density: CO2 Air
Physical Property of Carbon dioxide:
Chemical Property of Carbon dioxide:
A physical property is an aspect of matter that can be observed or measured without changing it. Examples of physical properties include color, molecular weight, and volume.
A chemical property may only be observed by changing the chemical identity of a substance. This property measures the potential for undergoing a chemical change. Examples of chemical properties include reactivity, oxidation states and flammability.

45. Quick Demos Key Concept 15: ? vs. Air Demo Density: ? Air
Physical Property:
Chemical Property:
Particle diagram to represent this demo.

46. Quick Demos Key Concept 16: Hexane vs. Air Demo Density: C₆H₁₄ Air
Physical Property:
Chemical Property:

47. End of Day