Biol1190 Chemistry Quiz PDF

Preview

Summary

Download Biol1190 Chemistry Quiz PDF

Description

Biology 1190

Fall 2019

Biology 1190: Chemistry Quiz You should be able to answer the following questions with relative ease. If you find that you cannot answer these questions please:  Read pages 28–43 in your textbook and/or  Consult your old chemistry/biochemistry notes and/or  Come and see me! I can provide some slides that may help you 1. The diagram below depicts the electron shell model for the distribution of electrons around the element oxygen. Based on the information given in the diagram, answer the following questions:

a. How many protons does oxygen have? ______________ b. How many neutrons does the isotope oxygen-17 have? ______________ c. Is oxygen considered a reactive element? Why or why not?

2. Water is a special compound with particular properties. a. What type of bond exists between the oxygen and hydrogen atoms in water?

b. What type of bond is responsible for the cohesive properties of water?

c. Water has a high specific heat capacity, meaning it takes a lot of energy to heat up a specific amount of water by 1 degree Celsius. What type of bond is responsible for the high specific heat capacity of water?

Biology 1190

Fall 2019

3. Order the following elements from highest electronegativity to lowest: carbon, oxygen, hydrogen, nitrogen. Explain your answer.

4. Methane has the chemical formula CH4. Would molecules of methane be able to hydrogen bond with one another? Why or why not?

5. Would you expect ammonia (NH3) to be hydrophilic or hydrophobic? Why?

6. True or False: acids and bases are always hydrophilic. Explain your answer.

7. Describe how ionic bonds are formed and give an example of a compound that is formed after the formation of an ionic bond.

8. In the chemical reaction below, circle the reactants. Put a box around the products.

A+BC...