Which of these is not soluble in water?

• Oil

• Honey

• Salt

• Sugar

Two wires carrying electricity can create a spark if they come too close together. This spark can start a fire. Wires carrying electricity are usually covered with plastic to keep them from starting a fire. Why does plastic keep the electricity from starting a fire?

• Plastic is a good insulator.

• Plastic can melt when heated.

• Plastic is softer than wire.

• Plastic conducts electricity.

Used to observe and describe matter

• Relative density

• Magnetism

• Physical properties

• Dissolving

Tags

NGSS.MS-PS1-2

Matter breaks down into particles that are so small that it seems to disappear.

• Relative density

• Magnetism

• Physical properties

• Dissolving

Tags

NGSS.MS-PS1-1

A student combined powdered paint with water to make a small amount of a blue liquid paint mixture. The student left the paint mixture in an open container. Several days later the student found the container and observed that changes had occurred. What most likely happened to the mixture?

• The container was empty after the mixture evaporated into the air.

• The paint evaporated, leaving only clear water in the container.

• The water evaporated, leaving only a dry blue solid in the container.

• The liquid paint mixture was lighter in color after some water evaporated.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student was asked to compare the masses of four blocks that were all the same size but made of different materials. The student used a balance to compare the masses of two blocks at a time. The student repeated this process three more times with different pairs of blocks and recorded observations.

Which list shows the blocks in order from least to greatest mass?

• Blocks N, M, L, P

• Blocks P, M, L, N

• Blocks N, L, M, P

• Blocks P, L, M, N

A material that allows energy to flow through it is called a(n)

• insulator

• conductor

• magnet

• circuit

A property of attraction for metals.

• Relative density

• Magnetism

• Physical properties

• Dissolving

Tags

NGSS.MS-PS2-3

A student puts four objects in a bucket filled with water. The objects are listed below. Which two objects are most likely less dense than the water?

• Wood block and metal paper clip

• Plastic ball and glass marble

• Metal paper clip and glass marble

• Wood block and plastic ball

Tags

NGSS.MS-PS1-2

The amount of matter packed into a given space compared to its ability to sink or float in water.

• Relative density

• Magnetism

• Physical properties

• Dissolving