8.2 Classifying Chemical Reactions

Which of the following is a type of chemical reaction?

• Synthesis

• Decomposition

• Combustion

• All of the above

Fireworks primarily involve ______ reactions.

• Combustion

• Synthesis

• Decomposition

Which of the following is a type of chemical reaction where two or more substances combine to form a single compound?

• Combustion reaction

• Synthesis reaction

• Decomposition reaction

• Precipitate

In a _______ reaction, a single compound breaks down into two or more simpler substances.

• Synthesis reaction

• Combustion reaction

• Decomposition reaction

• Double-replacement reaction

In a synthesis reaction, two elements react to form a single compound. Fill in the blank: A + B → ____.

• A) A + B

• B) AB

• C) A2B

• D) B2A

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is formed when sulfur dioxide gas (SO2) reacts with oxygen gas (O2)?

• Sulfur monoxide (SO)

• Sulfur trioxide (SO3)

• Sulfur dioxide (SO2)

• Sulfur tetroxide (SO4)

What is released during a combustion reaction?

• Water and light

• Heat and light

• Oxygen and heat

• Carbon dioxide and water

Tags

NGSS.HS-PS1-4

What is the product of the combustion of carbon in coal?

• Water

• Carbon dioxide

• Methane

• Oxygen

Tags

NGSS.MS-PS1-5

Which of the following gases is produced by the combustion of fossil fuels and contributes to greenhouse effects?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Helium

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

What is a decomposition reaction?

• A reaction where two elements combine to form a compound.

• A reaction where a single compound breaks down into two or more elements or new compounds.

• A reaction where elements are rearranged without breaking down.

• A reaction that involves only gases.

Tags

NGSS.MS-PS1-5