Reporting Category

What describes the ability of a solid to dissolve in water?

• melt

• dissapear

• solubility

• evaporate

A student observes ice forming on the edge of a school building. At what temperature did the water outside the school building most likely begin to change to ice? 

• 100 C.

• 32 C.

• 25 C.

• 0 C.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When a powdered drink mix was added to water, the liquid turned orange. A student decided the taste was too strong, so he poured out half of the liquid and added more water. Which of the following most likely occurred when more water was added?

• The physical state changed.

• The orange color became lighter.

• The liquid had a sweeter taste.

• None of the above

Which liquid is the most dense?  

• oil

• water

• syrup

• plastic bottle

Tags

NGSS.MS-PS1-2

A teacher dropped a bolt into a container of maple syrup and asked the students to remove it without touching the maple syrup. At first they used a strong magnet but the bolt would not move. They finally poured the maple syrup into another container to get the bolt out. Which of these best describes some of the bolt's properties?

• The bolt is magnetic and has the same density as the syrup

• The bolt is nonmagnetic and more dense than the maple syrup

• The bolt is nonmagnetic and less dense than the syrup

• The bolt is magnetic and less dense than the maple syrup

Tags

NGSS.MS-PS1-2

A student is asked to design a sleeve for a cup that will insulate thermal energy and not feel hot to the touch when the cup is filled with liquid. The students has 4 materials to choose from. Which of these materials is least useful as an insulator?

• cardboard

• aluminum

• rubber

• plastic

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-PS3-3

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 the plastic keep the electricity from starting the fire?

• Plastic is a good insulator

• Plastic can melt when heated

• Plastic is softer that wire

• Plastic conducts electricity

What is Solubility?

• A characteristic of matter than can be observed or measured and can be changed without changing the matter itself

• The amount of space taken up by matter

• The ability of a substance to dissolve in another substance

• A mixture where the substances are spread out so evenly between one another they cannot be separated

Tags

NGSS.MS-PS3-4

Water flows through turbines in dams like the one shown above. The flowing water makes the turbines spin. What type of energy is used to make the turbines spin in this type of dam?

• Light energy

• Thermal energy

• Sound energy

• Mechanical energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Why does the straw appear broken in the water?

• Light is being reflected

• Light is being refracted

• Light is bouncing off the water

• Light is being absorbed by the water

Tags

NGSS.MS-PS4-2