Name:___________________________
Period:_____
Biology
Chemistry worksheet
1. Count the carbon and hydrogen atoms in the following molecular diagrams:
a.
Carbon:________
Hydrogen:______
b.
Carbon:________
Hydrogen:______
c.
Carbon:________
Hydrogen:______
d.
Carbon:________
Hydrogen:______
e.
Carbon:________
Hydrogen:______
f.
Carbon:________
Hydrogen:______
2. Are these two molecules the same?
a.
Yes / No
b.
Yes / No
c.
Yes / No
d.
Yes / No
e.
Yes / No
3. Identify the element, atomic mass, and atomic net charge.
a. 5 Protons
6 Neutrons
5 Electrons
Element:____________
Mass:_______________
Net Charge:__________
b. 20 Protons
20 Neutrons
18 Electrons
Element:____________
Mass:_______________
Net Charge:__________
c. 11 Protons
11 Neutrons
10 Electrons
Element:____________
Mass:_______________
Net Charge:__________
d. 17 Protons
19 Neutrons
18 Electrons
Element:____________
Mass:_______________
Net Charge:__________
e. 26 Protons
30 Neutrons
23 Electrons
Element:____________
Mass:_______________
Net Charge:__________
4. Which of these molecules are real, and which are impossible?
(Circle the real ones, and put an X over the impossible ones)
a.
b.
c.
d.
e.
f.
5. A. What types of macromolecules can form polymers?
B. What types can not?
C. What type of chemical reaction links monomers together to form
polymers?
D. What type of chemical reaction breaks polymers down into smaller
pieces?