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Energy Concepts- CP

Energy Understanding Concepts- Integrated Science I CP

QuestionAnswer
What does the law of conservation state? energy cannot be created or destroyed, only transferred/converted from one useful form to another
Give an example of useful energy transformation.
Give an example of energy transformation that is not useful. 10% of electrical energy flowing through power lines is transformed into thermal energy and is lost into the surrounding air
What are the two highest uses of energy in the United States? Industrial 37% Transportation 27%
What two sources of energy are used the most in the United States? Petroleum 39% Natural gas 23%/Coal 23%
Why are coal, oil (petroleum) and natural gas called fossil fuels? they were formed from plants and animals that lived long ago
Explain what happens chemically when fossil fuels are burned. Many fossil fuels are hydrocarbons,contain hydrogen and carbon. When these fossil fuels are burned during combustion they combine with oxygen and other gases in the air to produce carbon dioxide, water vapor, and other gases.
What is fractional distillation used for Fractional distillation is used to separate mixtures of miscible liquids, such as ethanol and water.
What is fractional distillation? Define and describe the process. A process by which components in a chemical mixture are separated according to their different boiling points.
Created by: ldorso
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