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Quiz 1: Intro to Bio:
Scientific Method and Chemistry
1. Can you define the dependent and independent variable in any study, for example:
Algal diversity in different wavelengths of light was tested, what is …
the independent variable _______________the dependent variable____________________
2. Definition of
a. the independent variable
b. the dependent variable
__________________________
_________________________
3. Define hypothesis, theory, nullify
4. Can you determine the number of cm in one inch or vice versa?
5. Can you convert 0.05 in/hr, to mm/min ?
6. Def of Kilo (K), milli, centi, nano and micro prefix and can you convert one to the other.
7. What is a testable and a non testable hypothesis?
8. Identify the correct control in a quantitative vs a qualitative esperiment.
9. Characteristics of Life
10. Levels of Organization
BASIC CHEMISTRY
1. Given atomic number and atomic weight can you determine the number of electrons, protons, neutorns
and the number to covalent bonds it can form? Go to the following site for a periodic table.
http://img1.loadtr.com/b-438617-Periodic_Table_could_have.gif ANSWER THE FOLLOWING:
a. The atomic number and atomic weight of Magnesium (Mg), Lithium (Li) and Neon (Ne)
b. The number of protons, neutrons and electrons of Magnesium (Mg), Lithium (Li) and Neon (Ne)
**include the decimal amount of neutrons
c. how many valence (those in the outer orbit) electrons Magnesium (Mg), Lithium (Li) and Neon (Ne)
have?
d. Which , Mg, Li, or Ne cannot form chemical bonds.
2. How many electrons do each of the following atoms need in order to be stable?
Hydrogen:
Oxygen:
Nitrogen:
Carbon:
3. How many bonds will each of the following atoms form?
Hydrogen:
Oxygen:
Nitrogen:
Carbon:
4. What is an ionic bond?
5. What is a covalent bond?
6. The following are empirical formulas of small molecules or compounds. Draw the structural formulas,
showing covalent bonds, for each:
a) Atmospheric Hydrogen (H2)
b) Atmospheric Oxygen (O2)
c) Atmospheric Nitrogen (N2)
d)Carbon Dioxide (CO2)
e) Ammonia (NH3)
f)
Methane (CH4)
7 Calcium, Ca, has an atomic number of 20 and an atomic weight of 40, If Ca gave its electrons away it would
form an ion with a charge of ?_________