SK

Chemical Equations Quiz

1. What is the best definition for using a chemical equation?

A. A statement that uses symbols and formulas to show what happens in a chemical reaction. B. A statement that uses words and pictures to describe the layers of the Earth. C. A statement that uses measurements and numbers to show the weather for a day. D. A statement that uses labels and diagrams to explain the parts of a plant.

2. The substances that react together at the beginning of the equation are called:

A. Products B. Reactants C. Compounds D. Elements

3. The substances that are formed at the end of the equation are called:

A. Products B. Reactants C. Compounds D. Elements

4. Which side of a chemical equation contains the reactants?

A. Right side B. Left side C. Top side D. Bottom side

5. Which side of a chemical equation contains the products?

A. Left side B. Bottom side C. Right side D. Middle

6. The arrow (→) in a chemical equation means:

A. Plus B. Equals C. Produces/Yields D. Combines

7. The plus sign (+) in a chemical equation means:

A. Produces B. Separates C. Reacts with/and D. Stops

8. Which statement is TRUE?

A. Products are found before the arrow. B. Reactants are found after the arrow. C. The arrow separates reactants and products. D. The plus sign means "produces".

9. The words written above the arrow in some chemical equations are referred to as:

A. Reactants B. Products C. Conditions D. Formulas

10. Why are chemical equations useful to scientists?

A. They show the weather conditions during an experiment. B. They show the substances that react and the substances that are produced. C. They show the color and size of all laboratory equipment. D. They show where chemicals are stored in a laboratory.