Name
Date
Period
Total value: 36 pts. ALL answers need to be according to the in-class lecture and activities!
1)
Using the atomic symbol, identify an element (your choice) that has a valance of 5. (1 pt)
2) Which atom has the lowest mass? (1 pt)
3) Name 3 atoms (You may give symbols) that would be -1 as an ion. (3 pts)
4) Give the specific name for each type of ion we can create after atoms interact and for each one provide the charge it
would be. (1ea/4 pts)
5) Complete the following table. (1 point each/9 total)
SYMBOL
# of Protons
# of Neutrons
Valence #
Ga
As
I
6) Name the 2 major types of bonds and circle the one that makes CH4. (3 points)
7) For each number below (a-d) completely describe the solution according to the number given using words like strong
or weak and acid or base. (1each/3 points)
A) pH of 2.3
B) pH of 13.7
C) Equal % of H+ and OH8) A) Give the chemical formula for the hydrogen cation that is tracked on the pH scale. (2 pts)
9) How many more times acidic is a pH of 3 than 5? (2 points)
10) List each element and then for each one, indicate how many total atoms of those elements are in each of the following
compounds. (3pts)
Mg2(OH)3
11- 15 Multiple Choice: Choose the best answer for each question and write the capitol letter of the answer. If you circle
your answer, write the letter next to the answer as well. 1 point each/5 total
_____11) “I start with 5 carbons and end with 5 carbons” is an example of what thermodynamic law?
A) First
C) Both
B) Second
D) Neither
_____12) The type of reaction that is illustrated by; C+H+H+H+H
A) Catabolic
B) Anabolic
CH4 would be:
C) Cation
D) Anion
_____13) The graph to the right shows the activity of an enzyme
called glucosidase. What can you conclude from this data?
A) Glucosidase breaks down glucose substrates
B) Glucosidase functions best at around 70 degrees C.
C) Glucosidase does not function below 70 degrees C.
D) Glucosidase is not affected by temperature.
_____14) Which phrase best describes a polymer?
A) Individual parts of a large molecule.
B) Information coded in RNA
C) Molecules made of many small molecules
D) Individual amino acid
_____15) The diagram shows how an enzyme (black) binds to a substrate (white) during a chemical reaction. When this
reaction is complete, the…
A) enzyme’s shape will be different.
B) surrounding temperature will have increased.
C) hydrogen ion concentration will have decreased.
D) substrate will b a different molecule.
Give 3 adjectives that best describe you. (If you have time, only do this if you have answered all the other questions.)