Exploring the 3 Types of Chemical Reactions

Which of the following is NOT one of the five main types of chemical reactions?

• Neutralization

• Combustion

• Synthesis

• Decomposition

In a synthesis reaction, what do two elements combine to form?

• A gas

• A compound

• A mixture

• A solution

Tags

NGSS.MS-PS1-1

What is the general formula for a synthesis reaction?

• AB + CD → AD + CB

• A + B → AB

• AB → A + B

• A + BC → AC + B

Tags

NGSS.MS-PS1-5

In a decomposition reaction, what happens to a compound?

• It forms a new element

• It changes state

• It breaks down into two or more substances

• It combines with another compound

What is an example of a decomposition reaction?

• Sodium iodide reacting with lead chloride

• Magnesium and oxygen forming magnesium oxide

• Zinc reacting with hydrochloric acid

• Water breaking down into hydrogen and oxygen

Tags

NGSS.MS-PS1-5

In a single replacement reaction, what are the reactants?

• Two compounds

• Two elements

• An element and a compound

• A compound and a mixture

Tags

NGSS.MS-PS1-5

What is the general formula for a double replacement reaction?

• A + B → AB

• AB → A + B

• A + BC → AC + B

• AB + CD → AD + CB

In a double replacement reaction, what happens to the elements or groups of elements in the compounds?

• They form a gas

• They trade places

• They break down into individual elements

• They combine to form a single compound

What are the reactants in a combustion reaction?

• Two compounds

• Two elements

• A hydrocarbon and oxygen gas

• An element and a compound

Tags

NGSS.MS-PS1-1

What are the products of a combustion reaction?

• Carbon dioxide and water

• Hydrogen and oxygen

• Magnesium oxide

• Sodium chloride