Chemical Reactions Basics Review

Which of the following is a type of chemical reaction where a single compound breaks down into two or more simpler substances?

• Synthesis

• Decomposition

• Combustion

• Single Replacement

In a chemical reaction, what are the substances called that are formed as a result of the reaction?

• Reactants

• Products

• Catalysts

• Inhibitors

Tags

NGSS.MS-PS1-5

Which type of chemical reaction involves two or more substances combining to form a single product?

• Decomposition

• Synthesis

• Double Replacement

• Combustion

Tags

NGSS.MS-PS1-1

What is the term for the substances that are present at the start of a chemical reaction?

• Products

• Reactants

• Catalysts

• Elements

Tags

NGSS.HS-PS1-7

Which of the following reactions is an example of a double replacement reaction?

According to the Law of Conservation of Mass, the mass of the reactants in a chemical reaction is:

• Greater than the mass of the products

• Less than the mass of the products

• Equal to the mass of the products

• Unrelated to the mass of the products

Tags

NGSS.HS-PS1-7

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

What is the main characteristic of a single replacement reaction?

• Two compounds exchange ions

• A compound breaks down into simpler substances

• An element replaces another element in a compound

• Two elements combine to form a compound

Which of the following is an example of a synthesis reaction?