5.5 A

The diagram shows a ball in a beaker filled with water. Which statement best describes the relationship of the ball and the water?

• The water is less dense than the ball.

• The water and the ball are equally dense.

• The ball is less dense than the water.

• There is no relationship between the ball and the water.

All of these arrows indicate-

• chemical changes

• reaction changes

• irreversible changes

• physical changes

Tags

NGSS.MS-PS1-4

The upward arrows indicate-

• an increase in mass

• an increase in temperature

• a decrease in temperature

• an increase in volume

Tags

NGSS.MS-PS1-4

Students made observations of several different substances and classified them into the groups shown above. Which of the following materials should be classified into Group 3 in this chart?

• glass

• granite

• oxygen

• plastic

Tags

NGSS.MS-PS1-4

Which answer below should replace letter X in the table?

• phase

• state

• solid

• nitrogen

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why were these substances placed into these groups?

• One group is man-made; the other is natural.

• One group conducts electricity; the other insulates.

• One group is permanent; the other cycles through nature.

• One group is inexpensive; the other is costly.

Tags

NGSS.MS-PS1-3

Four small metal cylinders were filled with boiling water and placed into different containers. The containers were all the same size and shape but were made of different materials. A thermometer was placed in a small opening at the top of each cylinder so that the temperature of the water could be recorded. Results were recorded in the table above. Which container was the best insulator?

• Container 1

• Container 2

• Container 3

• Container 4

Tags

NGSS.MS-PS3-4

Which of the following diagrams belongs in the column labeled “Liquid” in the table?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why is the toaster’s electrical cord covered in plastic?

• to make the toaster get hot faster

• because plastic is a poor conductor of heat

• to make electricity in the wire flow faster

• because plastic is a poor conductor of electricity

A student examines a bar made of an unknown material. The material is shiny, hard, and feels cool to the touch. The student discovers that the bar conducts electricity. Which of the following materials is MOST likely found in the bar?

• glass

• metal

• plastic

• wood