Home 9.1a Chapter 9 Introduction

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9.1a Chapter 9 Introduction

External Link: http://bcove.me/20lr1tjv

SUMMARY

John discusses the chemical changes that occur as propane and oxygen combust to form carbon dioxide and water. Would. Duration 2:10.

 

VIDEO CHECK QUESTIONS

1. Which is cleaner: the combustion of gasoline or the combustion of propane?
2. Why can clouds of condensed water vapor can be seen coming from the exhaust of cars on cold days?
3. A reaction that absorbs energy is called what?

To optimize your learning, try answering the above video check questions on your own before scrolling down to view the author's answers.





1. Which is cleaner: the combustion of gasoline or the combustion of propane?
[The combustion of propane is cleaner.]
2. Why can clouds of condensed water vapor can be seen coming from the exhaust of cars on cold days?
[Water vapor is produced as gasoline combusts. This water vapor sometimes condenses when it makes contact with the cooler environment outside of the exhaust.]
3. A reaction that absorbs energy is called what?
[A reaction that absorbs energy is called “endothermic”.]

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