Physical & Chemical Properties
STANDARDS
S8P1. Students will examine the scientific view of the nature of matter.
d. Distinguish between physical and chemical properties of matter as physical (i.e., density, melting point, boiling point) or chemical (i.e., reactivity, combustibility).
e. Distinguish between changes in matter as physical (i.e., physical change) or chemical (development of a gas, formation of precipitate, and change in color).

TEST August 24Study guide





Test Review

Click on link TEST REVIEW TOOL if in embedded version the pictures in graduated cylinder & density questions do not show up. (to access via the link, click on link above, click on start quiz, it will show an error message, click on back arrow and quiz will reappear)




The Problem for this Unit:
OL-PBL-Problem-1-Phy-and-Chem-Properties.pptx
OL-PBL-Problem-1-Phy-and-Chem-Properties.pptx
OL-PBL-Problem-1-Phy-and-Chem-Properties.pptx


RUBRIC:
PBL 1 - UNKNOWN SUBSTANCE ANALYSIS REPORT.docx
PBL 1 - UNKNOWN SUBSTANCE ANALYSIS REPORT.docx
PBL 1 - UNKNOWN SUBSTANCE ANALYSIS REPORT.docx


DAILY ASSIGNMENTS
Monday 8/8
PBL: Physical & Chemical Properties
HOOK:

The Problem for this Unit:
OL-PBL-Problem-1-Phy-and-Chem-Properties.pptx
  1. Introduce the problem ...see PPT presentation (above)
Discussion based on the following format:
  • What's the problem?
  • Record: What do we already know?
  • Record: What do we need to know?
2. Large group discussion regarding : What do we know? (Have kids maintain a list or post on PBL wall)
3. Generate a list of questions regarding: What do we need to know? (They should reflect on the problem statement as well as the presentation of the solution in order to generate these questions) . Make one page per question in the student notebook.

We intend for them to address: What is matter? What is a property? What is a physical property? What is a chemical property? How are they alike & different? What is a substance? How do we find physical properties? How do we find chemical properties?






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Tues 8/9 & Wed 8/10
1. How you feel about the process and what you've done so far?


2. students read pages 38-47 and 50-51 in their texts (these pages reference physical & chemical properties). Conduct class discussion of these properties.
NOTES:

3. Observe the substances that the security training officers have indicated the test substance will come from.
powders: baking soda, baking powder, baby powder, cornstarch
liquids: water, isopropyl alcohol, clear hand sanitizer
metals: copper, aluminum, steel
Have students make observations of all the substances and identify the physical and chemical properties of each (using their research notes). They will use this information for the certification test. They should use the their notes from reading textbook pages 38-47 & 50-51 as well as research notes to make sure that they cover all of the physical & chemical properties.

Any properties that they cannot identify must be researched on the Internet.
Identifying pp & cp chart.docx
Identifying pp & cp chart.docx
Identifying pp & cp chart.docx
( include: malleability, ductility, density, magnetism)


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Thur 8/11Continue yesterday's assignment






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Fri 8/12- Mon 8/15- Tues 8/16

1. Identifying the white powder (lab grade): Certification Training mystery powder lab OL.docx

TEMPLATE FOR LAB;

Students use their phones to take pictures of the evidence and the lab results. These pictures should be used in their final "UNKOWN SUBSTANCE ANALYSIS REPORT"
Homework: check your answers >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>


Wed 8/17
Formative Assessment: Physical & Chemical Properties
1. Identifying the metal:
Provide students with samples of the metals. Have them refer to their notes and discuss the physical properties and use this information to identify the sample of the unknown metal found at the crime scene.

  • have them measure and calculate the density of each metal and compare the findings to that of the unknown metal
  • have them compare them using magnets (remind them to take pictures/video for presentation)
  • have them make a predicted identification Have the students reference their notes on the chemical properties of the metals

  • ask how they could use these properties to identify the unknown metal
  • set up demo of how to test for oxidation (you should have a sample ready of each of the metals rusted or not)
  • have them use this information to identify the unknown metal

1. warm up: video clip about relative density:
https://www.youtube.com/watch?v=4EMUsPJtCoc


Density Column Demo:

Extra time
http://phet.colorado.edu/sims/density-and-buoyancy/density_en.html
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Thursday 8/18

. Identifying the liquid Lab Activity
(provide students with samples of the evidence (water, alcohol & hand clear hand sanitizer). Have students access their notes/graphic organizer on the physical & chemical properties of the possible evidence. Discuss the physical properties first and have the students note the similarities and differences. Have them note and record those physical properties that best help them to narrow down and possibly determine which of these physical properties is/are used to differentiate between the unknown and the known substances.

3. . Discuss density as a physical property of matter and how it can be used to differentiate between similar substances.

  • students should calculate the density of each of the liquids and compare the unknown to the known

4. . Students refer again to your notes and discuss the chemical properties that you researched.
  • Ask them how they could use chemical properties to identify the unknown liquid evidence
  • Ask them to explain how these properties could be tested
  • DEMO: test the flammability of each of the liquids (use pie tins) The students should take pictures/videos of this to use in their presentations (use proper safety precautions).





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Fri 8/19
QUIZ
WORKING ON UNKNOWN SUBSTANCE ANALYSIS REPORT

We got our Powder ID lab back and if you made lower than a 70, you may take advantage of this grade recovery opportunity:
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Mon
review for test
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Tues 8/23
review for test


wed 8/24
test