Name ______Block ____
Biochemistry Webquest
Hippocampus - The Chemical Basis of Life (turn volume on)
http://www.montereyinstitute.org/courses/AP%20Biology%20I/course%20files/multimedia/lesson02/lessonp.html?showTopic=2
1. All living things are made up of ______.
2. What is the simplest type of matter? ______
3. What are the six elements that make up 99% of the matter in living things? ______, ______, ______, ______, ______, ______
4. What five elements are found in small amounts in living organisms? ______, ______, ______, ______, ______
5. What is a trace element? ______
6. List three trace elements. ______, ______, ______
Chemical Bonding- Go to: http://www.teachersdomain.org/asset/lsps07_int_ionicbonding/
1. Describe what happens when two negatively charged particles interact with one another. (you can draw a diagram to help illustrate your ideas)
2. When will oppositely charged atoms stick together?
3. Take a look at the ionic bond formed between Sodium and Chlorine atoms.
a. Draw each atom below as it looks like in NaCl on the website.
4. Describe how ionic compounds form crystals:
COVALENT BONDS Go to: http://www.teachersdomain.org/asset/lsps07_int_covalentbond/
1. If an atom, such as hydrogen, is able to form a covalent bond, describe what happens when
the electron shells of two atoms overlap:
a. What happens when the two atoms are fairly close?
b. What happens when the two atoms are TOO close?
2. What does the nucleus of an atom want to do to its own electrons?
3. What does the nucleus of one atom want to do to the electrons of a nearby atom?
4. Are the atoms really “sharing” electrons?
5. What type of atoms form covalent bonds?
6. Draw a graph showing the change in potential energy when atoms form covalent bonds.
7. What happens to the stability of atoms when they form covalent bonds?
8. A line can be used to represent a covalent bond between two atoms. Diagram pairs of atoms that can form
single, double, and triple bonds.
9. Can every atom form each of these kinds of bonds?
Properties of Water
To complete this webquest, use the links at http://waterpropertieswebquest.wikispaces.com/
1. Go to the short true/false quiz
How many questions did your group get right?
Identify the one thing that MOST surprised you in the quiz and explain WHY you found this surprising.
______
2. Watch the short video at Discovery Education and answer the following questions.
What is the chemical formula for water?
What is water made of?
Why does water have a lopsided shape and act like a chemical magnet? ______
______
What is unusual about solid water compared to solids of other materials? ______
______
At what temperature does water begin to expand?
How does ice protect aquatic animals? ______
How does ice melting help keep food in a cooler cold? ______
______
What creates surface tension and capillary action? ______
______
3. Go to the Water Fact Sheet
How much of earth’s water is actually useable?
How long can a human live without food? How does this compare to the length of time a human can go without water? ______, ______
By what percent does water expand when it freezes?
4. Use the Properties of Water link to answer the following questions.
Why does water act “sticky”? ______
______
Why is water called the universal solvent? ______
______
Why is water a unique compound here on Earth? ______
______
What are the freezing point and boiling point of water? ______, ______
What is specific heat? ______
5. Go to Sticky Water
Describe how surface tension works in your own words ______
______
6. Go to Triangular Wave
What is a polar molecule? ______