Types of Reactions

What type of reaction is the following: C3H8 + 5O2 -> 3CO2 + 4H2O?

• Combustion reaction

• Synthesis reaction

• Decomposition reaction

• Single displacement reaction

Answer explanation

The given reaction of C3H8 + 5O2 -> 3CO2 + 4H2O is a combustion reaction because it involves a fuel (C3H8) reacting with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O) with the release of heat and light.

Identify the type of reaction: 2H2 + O2 -> 2H2O

• Decomposition reaction

• Synthesis reaction

• Single displacement reaction

• Combustion reaction

Answer explanation

The given reaction is a synthesis reaction because two or more reactants combine to form a single product, which is represented by the equation 2H2 + O2 -> 2H2O.

Tags

NGSS.MS-PS1-1

In which type of reaction do two or more substances combine to form a new compound?

• Combustion reaction

• Decomposition reaction

• Synthesis reaction

• Single displacement reaction

Answer explanation

In a synthesis reaction, two or more substances combine to form a new compound, making it the correct choice for this question.

What type of reaction is the breakdown of hydrogen peroxide into water and oxygen gas?

• Synthesis reaction

• Decomposition reaction

• Combustion reaction

• Single displacement reaction

Answer explanation

The breakdown of hydrogen peroxide into water and oxygen gas is a decomposition reaction where a single compound breaks down into two or more simpler substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which type of reaction involves the exchange of ions between two compounds?

• Single displacement reaction

• Combustion reaction

• Double displacement reaction

• Decomposition reaction

Answer explanation

Double displacement reaction involves the exchange of ions between two compounds, making it the correct choice in this scenario.

What type of reaction occurs when an acid reacts with a base to form water and a salt?

• Neutralization reaction

• Acidic reaction

• Base reaction

• Water formation

Answer explanation

When an acid reacts with a base to form water and a salt, it is known as a neutralization reaction, making the correct answer choice 'Neutralization reaction'.

Tags

NGSS.MS-PS1-5

Identify the type of reaction: Mg + 2HCl -> MgCl2 + H2

• Decomposition reaction

• Single replacement reaction

• Combustion reaction

• Double replacement reaction

Answer explanation

The given reaction involves one element (Mg) replacing another element (H) in a compound, indicating a single replacement reaction.

What type of reaction is the rusting of iron?

• Reduction reaction

• Combustion reaction

• Oxidation reaction

• Neutralization reaction

Answer explanation

The rusting of iron is an oxidation reaction where iron reacts with oxygen to form iron oxide, indicating a loss of electrons by iron.

In which type of reaction does a single element replace another element in a compound?

• Double displacement reaction

• Single displacement reaction

• Combustion reaction

• Decomposition reaction

Answer explanation

In a single displacement reaction, a single element replaces another element in a compound, making it the correct type of reaction for this scenario.

What type of reaction is the burning of methane in the presence of oxygen?

• Combustion reaction

• Neutralization reaction

• Decomposition reaction

• Synthesis reaction

Answer explanation

The burning of methane in the presence of oxygen is a combustion reaction, where a hydrocarbon reacts with oxygen to produce carbon dioxide and water.

Tags

NGSS.MS-PS1-5