Types of Chemical Reactions

What occurs in a synthesis reaction?

• Two compounds exchange components.

• A compound burns to produce carbon dioxide and water.

• Simple substances combine to form a more complex compound.

• A compound is broken down into simpler substances.

What is produced when water (H₂O) undergoes a decomposition reaction?

• Sodium chloride

• Carbon dioxide and water

• Iron and copper chloride

• Hydrogen and oxygen gases

What is the result of burning methane (CH₄) in a combustion reaction?

• Methane and oxygen

• Carbon monoxide and hydrogen

• Carbon dioxide and water

• Sodium chloride and water

In a single replacement reaction, what happens to the element that is replaced?

• It remains attached to the original compound.

• It combines with the replacing element.

• It becomes isolated by itself.

• It disappears completely.

During a double replacement reaction, how do the compounds change?

• They decompose into simpler elements.

• They form a single larger molecule.

• Their ions switch places with each other.

• They burn to form gases.