States of Matter

Which sentence best describes what has happened to the popsicle?

• The popsicle changed state from a solid to a liquid because of an increase in temperature.

• The popsicle changed state from a solid to a liquid because of a decrease in temperature.

• The popsicle changed to a different substance.

• The popsicle changed from a liquid to a solid because of an increase in temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Sal is studying how the rate of stirring affects the time it takes for salt to dissolve. He added 1 g of salt to each of four beakers filled with water, stirred the water at different speeds, and recorded how long it took for all the salt to dissolve each time. Sal’s results are shown in the table. Which conclusion could Sal draw based on his results?

• Stirring a solution of water has no effect on the rate at which salt dissolves.

• Stirring a solution of water decreases the rate at which salt dissolves.

• Salt will not dissolve in water unless the water is stirred.

• Stirring a solution of water increases the rate at which salt dissolves.

Tags

NGSS.MS-PS3-1

Which is the best combination of tools to use to separate a mixture of iron filings, sand, and water?

• filter, beakers, and magnet

• strainer, filter, and evaporating dish

• beakers, hand lens, and filter

• magnet, hammer, and evaporating dish

Which is the best description of the marble’s volume?

• 65 mL

• 100 mL

• 25 mL

• 40 mL

What is the best way to separate a mixture of pencil shavings and paper clips?

• Spread the mixture out on a table and sort by hand.

• Dissolve the pencil shavings in water.

• Use a magnet to attract the paper clips.

• Use tongs to pick out the paper clips.

When two materials mix evenly and do not settle, that mixture is called a _____.

• solution

• sugar

• solute

• compound

Which sample of Epsom salt would you expect to dissolve the fastest?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What can affect the rate of a chemical change?

• Texture

• Temperature

• Gas Bubble

• Color

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement about the volume and mass of the sand in the cups is correct?

• The sand in Cup A has less volume and less mass than the sand in Cup B.

• The sand in Cup A has less volume and greater mass than the sand in Cup B.

• The sand in Cup A has greater volume and less mass than the sand in Cup B.

• The sand in Cup A has greater volume and greater mass than the sand in Cup B.

Tags

NGSS.MS-PS1-2

You place a piece of bread in the toaster. A minute later, the toast pops up. What evidence tells you an increase in temperature cause the chemical change?

• The toast changed color.

• The toast changed size.

• The toast changed state.

• The toast changed shape.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-5