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Questions and Answers
What is the chemical process in which a substance reacts with oxygen to give off heat?
What is the chemical process in which a substance reacts with oxygen to give off heat?
- Decomposition
- Evaporation
- Combustion (correct)
- Oxidation
What are some fuels commonly used in homes?
What are some fuels commonly used in homes?
- Charcoal, methane, and butane
- Wood, coal, and cow dung (correct)
- Kerosene, natural gas, and gasoline
- Propane, diesel, and ethanol
What is the main difference between the burning of a candle and the burning of coal?
What is the main difference between the burning of a candle and the burning of coal?
- Candle produces heat, coal produces light
- Candle burns with a flame, coal does not (correct)
- Candle burns without a flame, coal burns with a flame
- Candle produces carbon dioxide, coal does not
What gas is produced when coal burns in air?
What gas is produced when coal burns in air?
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What is the product of the combustion of magnesium?
What is the product of the combustion of magnesium?
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Study Notes
Combustion Process
- Combustion is the chemical process in which a substance reacts with oxygen to give off heat.
Fuels Used in Homes
- Some common fuels used in homes include coal, wood, and gas.
Burning of Candle vs Coal
- The main difference between the burning of a candle and the burning of coal is the speed and purity of the combustion reaction.
Product of Coal Combustion
- When coal burns in air, it produces carbon dioxide gas.
Product of Magnesium Combustion
- The combustion of magnesium produces a bright white light and a large amount of heat, producing magnesium oxide as a product.
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