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Working in groups of two to four and armed with a textbook or some other reliable source
answer the following questions concerning chemistry (Chapter 2). This assignment is worth 50 points
with the possible points for each question in parenthesis.
1. (3) Describe three issues you have faced or thought about that would have required some
knowledge of chemistry.
2. (3) Design a diagram or cartoon that would demonstrate the relationship between chemistry,
matter, elements, molecules, atoms, and potential and kinetic energy. Be creative to enhance
memory.
3. (3) How is the periodic table of elements organized? Go beyond the obvious columns and rows.
4. (3) What are the four most important (abundant) elements to life?
Biology& 100
Mr. Brumbaugh
1
Class Assignment 2
Chemistry Assignment
5. (3) Draw a diagram or cartoon showing the subatomic particles and their numbers for the atoms
called oxygen and carbon.
6. (4) Differentiate between a neutral atom, an ion, and an isotope for the same atom by drawing a
diagram of an atom that would demonstrate each condition?
7. (3) Fill-in the following blanks to describe the structure of an atom: Every atom consists of a
central mass called the
that contains the
and a surrounding region (sometimes called the cloud or shell)
. The
move around the
speeds. In the central mass we find the particles called
and
at very high
.
8. (3) How does electronegativity and valence relate to chemical bonding?
Biology& 100
Mr. Brumbaugh
2
Class Assignment 2
9. (4) Describe how an ionic, a polar co-valent, and non-polar covalent bond are formed and give a
molecular example of each?
10. (4) Explain how each of the types of bonds in question #9 are used in biological systems? Think
in terms of stability and energy.
11. (4) Why does water form hydrogen bonds and what unique features of water are attributable to
this property?
Biology& 100
Mr. Brumbaugh
3
Class Assignment 2
12. (3) Explain why a water skipper insect can stay afloat on the pond, but when you “walk” out you
tend to submerge?
13. (5) Define each of the following terms: solution, solvent, solute, acid, base, pH, and buffer.
14. (5) Explain how the terms in question #13 can be applied to biological systems?
Biology& 100
Mr. Brumbaugh
4
Class Assignment 2