Unit 13 – The Driving Forces What kind of reaction is shown

Unit 13 – The Driving Forces

What kind of reaction is shown by this energy diagram?

2. Does the following reaction have an increase or decrease in entropy?

3. What is the natural direction of change? (see the video to answer this)

4. What two things drive a chemical reaction? (NOT what speeds it up or slows it down but instead what two things cause a reaction to take place or not take place)

5. What is the name of a biological catalyst as given in the video?

Unit 14 – Molecules in Action

1. When molecules collide, what are two different options that could happen?

2. Why did the hydrogen explosion on the Hindenburg require additional energy to explode?

What is the effect of catalysts on activation energies?

4. What is the name of a substance that increases the rate of a reaction without changing the products? How do they do it?

5. Who was it that determined chemical reactions could be shifted?

Unit 15 – The Busy Electron

1. What general definitions are given in the video for oxidation and reduction?

2. In the reaction shown by Don Showalter, what two elements reacted? Which one was oxidized? Which was reduced

3. In the electrolysis experiment done by Don Showalter, what are the two products formed? In this case, ___________energy is converted to __________energy.

4. In the video, what metal was used as a sacramental anode? Why was it used?

5. What is formed at each of the two electrodes in the production of aluminum?

Unit 16 – The Proton in Chemistry

1. According to our video, what is an acid? What is a base?

2. According to our video, what is the top acid produced in the United States? Of the top ten chemicals produced in the United States, how many are acids and bases?

3. What does it mean to be a strong acid? How does a strong acid differ from a weak one? .

4. What base is used extensively by farmers?

5. What does a pH of 0-6 indicate? What does a pH of 7 indicate? What does a pH of 8-14 indicate?

Unit 17 – The Precious Envelope

1. What are the two main gases that make up the atmosphere?

2. What compound in our atmosphere absorbs ultraviolet radiation?

3. What gas threatened the earth’s ozone layer in the 70’s?

4. Ozone in the atmosphere protects us. What effect does ozone have at sea level?

5. How have scientists been able to monitor recent changes in the earth’s atmosphere?

Unit 18 – The Chemistry of the Earth

1. According to our video what is the highest percentage element in the Earths CRUST? In the ENTIRE earth?

2. What is an Ore? What are the three ways that ores are concentrated or formed on earth?

3. What causes the destruction of statues? What forms caves? How are these similar?

4. What is the difference between rain and acid rain (pH?)?

5. According to our video what process did William develop? What does it do?