8th Grade Science Staar Objective 1: Matter & Energy Worksheet printable pdf download

8th Grade Science Staar Objective 1: Matter & Energy Worksheet

Name __________________

Class Period: _______

Objective 1: Matter and Energy

→ 3CO

+ 5O

+ 4H

1. How many different elements are involved in the reaction shown

above? Record and bubble in your answer in the grid on the

right. (6.5C)

2. Which of these best describes one of the subatomic particles that could be found at

location X in the model of an atom shown above? (8.5A)

a. It has mass but no charge.

b. It has no mass and a positive charge.

c. It has a large mass and a negative charge.

d. It has no mass and an equal number of positive and negative charges.

3. An element has a metallic-gray appearance. It also has the properties of both a metal and

a nonmetal. In which section of the periodic table indicated above would the element

most likely be found? (8.5C)

a. 1

b. 2

c. 3

d. 4

4. A student observes some sugar as it is heated and burns. The student concludes that a

chemical reaction has occurred. Which of the following observations about the burning

sugar provides evidence of a chemical reaction? (8.5E)

a. Heat is added to the sugar crystals.

b. The sugar melts and becomes a liquid.

c. The temperature of the sugar increases.

d. Gas is produced as the sugar turns black.

8th Grade Science Staar Objective 1: Matter & Energy Worksheet