Exploring Types of Chemical Reactions

Which of the following is NOT an indicator of a chemical reaction?

• Formation of precipitate

• Melting of ice

• Formation of bubbles

• Change in color

What is the general formula for a synthesis reaction?

• AB → A + B

• A + B → AB

• AB + CD → AD + CB

• A + BC → AC + B

In the formation of carbon dioxide, which elements combine?

• Carbon and oxygen

• Carbon and nitrogen

• Carbon and hydrogen

• Oxygen and hydrogen

What does decomposition mean in the context of chemical reactions?

• Replacing one element with another

• Breaking down into smaller pieces

• Combining substances

• Reacting with oxygen

What is the general formula for a decomposition reaction?

• A + B → AB

• AB → A + B

• A + BC → AC + B

• AB + CD → AD + CB

In a single replacement reaction, what happens?

• Two compounds react to form two new compounds

• One element replaces another in a compound

• A compound breaks down into simpler substances

• Two elements combine to form a compound

What is the general formula for a single replacement reaction?

• A + B → AB

• AB + CD → AD + CB

• AB → A + B

• A + BC → AC + B

In a double replacement reaction, what happens?

• Two compounds react to form two new compounds

• Two elements combine to form a compound

• A compound breaks down into simpler substances

• One element replaces another in a compound

What is the general formula for a double replacement reaction?

• A + B → AB

• AB → A + B

• A + BC → AC + B

• AB + CD → AD + CB

What are the products of a combustion reaction involving a hydrocarbon?

• Carbon monoxide and hydrogen

• Oxygen and water

• Methane and oxygen

• Carbon dioxide and water