Science Interim

Your teacher mixes together two clear liquids. Together, the two liquids bubble and turn blue. You just witnessed a

• transfer of energy

• physical reaction

• chemical reaction

• force

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these is an example of a chemical change that occurred? Choose all that apply

• The potassium chlorate changed phase.

• A flame formed inside the test tube.

• A cloud of smoke was produced.

• The resulting solution was black.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How can salt be removed or separated from a salt water mixture?

• Use a strainer to separate the two

• boil the mixture, the heat will cause the salt and water to separate

• pour more salt until it absorbs the water

• Freeze the mixture

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

You put some water in trays in the freezer. Soon you have ice cubes. What happens to the tiny particles of water as the water changes to ice?

• They move in all different directions

• They move slowly

• They move faster

• They move in one direction

Tags

NGSS.MS-PS1-4

A student views two pictures of a lake. The first picture was taken in the summertime. It shows the lake with liquid water. The second picture was taken in the winter. It shows the lake with a frozen layer of solid water on the surface. The student claims the state of the lake is due to the temperature of the water.

• Water becomes a solid when heat is removed, causing the molecules in the water to move more quickly.

• Water becomes a liquid when heat is removed, causing the molecules in the water to move more quickly.

• Water becomes a solid when heat is removed, causing the molecules in the water to move more slowly.

• Water becomes a liquid when heat is removed, causing the molecules in the water to move more slowly.

Tags

NGSS.MS-PS1-4

Substances have different freezing and boiling points. These values help scientists know when phase changes happen. Which three substances will have a phase change if the temperature goes up from 50 degrees Celsius to 300 degrees Celsius?

• phosphorus

• potassium

• sodium

• gallium

• rubidium

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The diagram shows water particles in three different phases.

On a summer day, water particles from the ocean change phase as they move into the air. Which of the following models best shows this process?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-4

Veronica weighed an empty bowl and recorded its mass. Then she placed three ice cubes in the bowl and weighed it again. After the ice melted, she recorded the mass of the bowl and the water. She put the data in a table. What conclusion should Veronica make from her observations?

• The masses of the water and the ice were both 43 grams, so the amount of matter did not change.

• The masses of the water and the ice were both 153 grams, so the amount of matter did not change.

• Some of the water spilled because the mass of liquid water should have been greater than the mass of solid ice.

• There was an error in weighing the ice because the mass of liquid water should have been less than the mass of solid ice.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A glass of ice water is placed on a table inside a room that is at room temperature. The ice inside the glass melts. The diagram represents the changes observed. Which piece of evidence supports the conservation of matter during the changes shown in the diagram?

• The contents of the glass are wet before and after the ice melts.

• The combined mass of the glass and its contents is the same before and after the ice melts.

• The combined mass of the glass and its contents is less after the ice melts.

• The contents of the glass are colorless before and after the ice melts.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Malik weighed an empty beaker. The beaker weighed 50 grams. Then Malik added 115 grams of water to the beaker. He placed the beaker of water in a freezer until the water became solid ice. Which prediction should Malik make about the ice in the beaker?

• The ice will weigh less than 115 grams. After the ice melts, the water will weigh less than 115 grams.

• The ice will weigh less than 115 grams. After the ice melts, the water will weigh 115 grams.

• The ice will weigh 115 grams. After the ice melts, the water will weigh less than 115 grams.

• The ice will weigh 115 grams. After the ice melts, the water will weigh 115 grams.

Tags

NGSS.MS-PS1-5