8-1 Quizizz Lesson: Combustion Reactions

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Once the hydrocarbon (​

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) breaks apart, the ​ Carbon & Hydrogen atoms combine with ​

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atoms to make ​

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new products (assuming there is plenty of oxygen available).

Multiple Choice

What are the PRODUCT(S) of a combustion reaction

(assume there is plenty of oxygen available)?

• Carbon Dioxide

• Carbon & Oxygen

• Carbon Dioxide & Water Vapor

• Liquid water

• Hydrogen & Carbon

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We use Combustion Reactions to power our cars, heat our homes, and cook our food because Combustion Reactions are ​

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thermic Reactions which means the ​

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the surroundings.

Multiple Choice

The flame will only be visible

• while atoms are rearranging.

• as long as the candle is hot

• if all of the oxygen has been turned into CO₂ and H₂O

• as long as wax is present

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According to the balanced equation, 1 molecule of methane (CH₄) has enough carbon atoms present to build ​

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molecule of carbon dioxide and enough hydrogen atoms present to build ​

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molecules of water vapor.

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According to the balanced equation, at least​

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molecules of oxygen must be present to allow 1 molecule of methane (CH₄) to completely react.

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According to the balanced equation, 1 molecule of ETHANOL (C₂H₃OH) has enough carbon atoms present to build ​

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molecules of carbon dioxide and enough hydrogen atoms present to build ​

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molecules of water vapor.

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According to the balanced equation, at least​

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molecules of oxygen must be present to allow 1 molecule of ETHANOL (C₂H₃OH) to completely react.

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According to the balanced equation, 1 molecule of PROPANE (C₃H₈) has enough carbon atoms present to build ​

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molecules of carbon dioxide and enough hydrogen atoms to build​

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molecules of water vapor.

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According to the balanced equation, at least​

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molecules of oxygen must be present to allow 1 molecule of PROPANE (C₃H₈) to completely react.

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The Carbon atoms originally in the fuel combine with oxygen to form ​

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molecules. The Hydrogen atoms that were once in the fuel combine with oxygen atoms to form ​

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molecules. Both products are ​

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.

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COMPLETE combustion reactions occur when there is ​

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available to react with all of the Carbon and Hydrogen atoms in the fuel. INCOMPLETE combustion occurs when there is ​

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to react with all of the C & H atoms in the fuel.

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In a COMPLETE combustion reaction, there is enough oxygen for all of the carbon atoms from the fuel to bond with. All of the Carbon atoms from the fuel will bond with TWO oxygen atoms and form

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which are represented as ​

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carbon dioxide molecules

CO2 (g).

unreacted carbon atoms

CO (g)

C (s)

carbon monoxide molecules

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In an INCOMPLETE combustion reaction, there is NOT enough oxygen for all of the carbon atoms from the fuel to bond with. Some of the Carbon atoms will only bond with ONE oxygen atom and form

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molecules which are represented as ​

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. Some carbon atoms don't have any oxygen atoms to bond with! We represent these unreacted atoms as ​

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.

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carbon monoxide

CO (g)

C (s)

CO2 (g)

carbon dioxide

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The smoke is produced when carbon atoms originally in the fuel ​

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to bond with. They remain unreacted.

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don't have any oxygen atoms

only have 1 oxygen atom

have an abundance of oxygen atoms

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The fire is orange/yellow because some of the carbon atoms remain unreacted due to the ​

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of oxygen. These unreacted C atoms glow when they get hot. This doesn't happen if there is enough oxygen to bond with all of the carbon atoms.

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shortage

abundance

Multiple Select

Select ALL images that indicate there is an abundance of oxygen surrounding the fuel.

Multiple Select

Select ALL images that indicate an INCOMPLETE COMBUSTION reaction is happening.

Multiple Choice

Carbon monoxide molecules bind to __ which should be binding to oxygen and transporting it to the cells of your body.

• red blood cells

• white blood cells

• platelets

• carbon dioxide molecules

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The hemoglobin in red blood cells tend to bind more tightly to ​

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molecules than to ​

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molecules. The more CO in a person's blood, the ​

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oxygen will be transported to the cells throughout the body.

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carbon monoxide

oxygen

less

more

water