Nwea Science

If I added 27 grams of salt to water and separated the solution with a hot plate, what amount of salt would be left behind?

• 20 grams

• 0 grams

• 27 grams

• 10 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following is a method of separating solutions?

• hand separation

• filtering

• screening

• evaporation

To separate the sugar and lemonade, what method should you use?

• filtration

• sorting

• magnet

• boiling

Which mixture separation method would use to separate sugar from water?

• filtration

• magnet

• boiling/evaporation

• sorting physically

Tags

NGSS.MS-PS1-4

Some people add sugar to hot tea. Which property of sugar remains the same when the sugar is in the tea solution?

• The taste of the sugar

• The size of the sugar crystals

• The color of the sugar crystals

• The texture of the sugar crystals

A worker built a sidewalk and pressed some large salt particles into the concrete while it was still wet. When the concrete was dry, the worker washed the sidewalk with water. The picture below shows the sidewalk after it was washed. What most likely happened to the salt? (5.5C)

• It evaporated into a gas.

• It turned into concrete.

• It dissolved in the water.

• It turned into a solid.

Tags

NGSS.MS-PS1-2

3.5C - A student makes a model of the water cycle by using a cup, some water, and plastic wrap. After the student places the model near a sunny window, moisture forms on the inside of the plastic wrap.

• Freezing
• Condensation
• The warming of air
• The formation of clouds

Tags

NGSS.MS-ESS2-4

Which of the diagrams best shows the arrangement of molecules in a solid? 

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

Gallium is a metal that melts at about 30°C. If a person, whose body temperature is 37°C, held a cube of gallium for five minutes, what will most likely happen to the gallium?

• It will change to a gas.
• It will change to a liquid.
• It will become a solution.
• It will become a mixture.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What will happen if the lid is removed from a container that holds helium gas?

• The gas will expand and escape from the container. 
• The gas will slowly change back into a liquid.
• When light hits the gas, it will change colors.
• Gravity will keep the gas in the container.

Tags

NGSS.MS-PS1-2