Smells Investigation 1: Building with Matter
Level 4 Activities Digital Version
Name _________________________________________
Date _________________________ Period _______
Link to MVHS Chemistry webpage (for other links)
mountvernonschools.org/page/chemistry/
Lesson #1: Electrolytes
What are electrolytes?
http://health.howstuffworks.com/wellness/diet-fitness/information/question565.htm
Now choose a follow up article (printed copies available in class, and links online at the MVHS Chemistry website)
and read it:
Cholera: Haiti’s Latest Scourge http://whyfiles.org/2010/cholera-haitis-latest-scourge/
Ultra Endurance Athletics http://whyfiles.org/2011/ultra-endurance-athletics/
1. Summarize the information in your article of choice. (about 3 sentences).
2. Why are electrolytes used in this situation?
3. Describe how the electrolytes are used in this situation.
Lesson #2:
How Iron and Steel Work
by Marshall Brain and Robert Lamb
Browse the article How Iron and Steel Work <http://science.howstuffworks.com/iron.htm>
4. Summarize the information in this article (about 3 sentences).
5. Explain the use of one substance besides iron in a process described in the article.
6. Choose a new word or phrase you learned. Define it and describe how it is used in the article.
Lesson #3: Aroma Therapy / In the Military, It's Known As 'Nonlethal Weapons Development'
http://www.sfgate.com/news/article/Aroma-Therapy-In-The-Military-It-s-Known-As-2919298.php
7. Summarize the information in this article (about 3 sentences).
8. What odors do you think you would find the most repellent?
9. Explain a smell-related product you would like to invent or purchase.
Lesson #4: Isomer construction kit < http://antoine.frostburg.edu/cgi-bin/senese/tutorials/isomer/index.cgi> or
follow the link from the MVHS website at www.mountvernonschools.org, search for chemistry, and see Lesson #4.
This website shows just carbon atoms in compounds made of carbon and hydrogen. Make as many isomers as you
can. Sketch some of them here:
Propane
Butane isomer
Butane isomer
Pentane isomer
Pentane isomer
Pentane isomer
Hexane isomer
Hexane isomer
Hexane isomer
Hexane isomer
Hexane isomer
Heptane isomer
10. These are called structural isomers. How many unique heptane_____ and octane____ isomers did you make?
11. How many hydrogen atoms are needed for a molecule with 3 carbons_____? 4 carbons_____? 5
carbons____?
Lesson #5: HONC
12. Structural formulas like the one to the right sometimes leave out lines representing
bonds. Which bonds are left out? Write the molecular formula for this substance.
13. This (to the left) is a structural formula of the same molecule. Which
atom is now represented by a vertex (or corner) in the lines in the structure?
Put the symbol for that atom into the structure below.
14. In the structure above, hydrogen atoms which are attached to carbon atoms are left out. Add the necessary
hydrogen atoms to make the structure meet the HONC rule. Then write the molecular formula for this
substance.
15. This is the structure of caffeine. Write the molecular formula.
16. Write the molecular formula for these molecules.
(butyric acid)
(Tryptophan)
Now try making your own structures for these formulas. You may use either of the types of structural formulas:
showing all the atoms, or using the skeletal formula, where carbons are at vertices and have their hydrogen atoms
left out. Just remember the HONC rule.
CH3OH
C2H4O2
C3H7NO2
C7H5N3O6