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  • Home
  • About
  • Student Portal
    • Physical Science
    • Biology
    • Chemistry
    • Physics
    • Human Anatomy & Physiology
    • Principles of Engineering
    • Civil Engineering & Architecture
    • Economics
    • Business Management & Ownership
  • CLASS CALENDAR
  • CLASS FEES
  • POLICIES / HANDOUTS
  • Contact

Unit 5: The Elements

Reading (weeks 8 & 9)
​BJU book: Ch. 5 "Elements"

Topics
  • Periodic table
  • Periodic trends
  • Ionization energy
  • Electron affinity
  • Electronegativity

Labs
Memo: 2020-2021 labs will include hands-on and virtual, and may vary as the Covid-19 situation changes. 
Here is a list of possible labs for this lesson. I will choose from this list when we get here. ​
  • ​The "Hydrogen gas lab" is our regular lab, but there are numerous virtual labs which cover the topics well. There are also labs you can do at home. We'll decide when we get here. 
Hands-on labs you could do at home with supervision:
  • With proper supervision, you could do the Hydrogen lab at home on a small scale (never make more than 1 small test tube of hydrogen at any time). There is also an excellent graphing-type lab which illustrates periodic trends. 
Virtual labs which pertain to the topics covered:
  • The periodic trends "graphing" lab is the best one
Left: Pure Gold (chemical symbol = Au)     Right: Fools Gold (Pyrite = FeS2) 
Picture
Pure Gold (chemical symbol = Au)
Picture
Fools Gold (Pyrite = iron disulfide)
Print this Periodic Table if you haven't already, and bring to class from now on
File Size: 2880 kb
File Type: pdf
Download File

periodic_trends_handout.docx
File Size: 442 kb
File Type: docx
Download File

Lecture outline:
  • The periodic table and its historic development
  • Atomic radius, ionic radius
  • Electron affinity, ionization energy, and electronegativity
  • Overview of the main groups on the periodic table
Hydrogen lab
We will make and test hydrogen gas. A classic lab exercise in making and collecting this important gas, and testing it under different conditions.
h2_lab_handout.pdf
File Size: 579 kb
File Type: pdf
Download File

student_exemplar: hydrogen_lab_report.pdf
File Size: 304 kb
File Type: pdf
Download File

Homework (always refer to your class emails for due dates)
the_elements_homework_.docx
File Size: 131 kb
File Type: docx
Download File


​Spacecraft CO2 Removal assignment
Research the following and submit a 1-1/2 to 2 page report – “How is carbon dioxide gas – which is exhaled by humans - eliminated from a spacecraft? How do they prevent it from building up and poisoning the astronauts?"
  1. Describe the system used
  2. Write the chemical reaction(s) taking place, using the proper symbols
  3. Include sketches, diagrams and any relevant pictures
kjohanson@nexgenacademy.org
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