5.PS1.3 Solutions 5th Grade TNReady #1

After a teaspoon of sugar has been stirred into a glass of water, no solid sugar can be seen. What happened to the sugar?

• The sugar disappeared.

• The sugar melted.

• The sugar evaporated.

• The sugar dissolved.

Tags

NGSS.MS-PS1-2

A science class is going to do an experiment to investigate how water temperature changes the rate at which salt dissolves in water. What tool will be needed to measure the temperature of the water?

• calculator

• hot plate

• thermometer

• stopwatch

Tags

NGSS.MS-PS3-4

Dashaun wanted to find out how temperature affects the rate at which three packets of sugar dissolve in a liter of water. To find out, he performed a scientific investigation. The results from his investigation are shown below. Which of the following is true about the mean (average) values for the time it took the sugar to dissolve?

• As the temperature increased, there was an increase in the amount of time needed to dissolve the sugar.

• The time needed for the sugar to dissolve decreased as the temperature increased.

• The amount of time needed to dissolve the sugar stayed the same no matter what the temperature was.

• It is impossible to make any conclusions about Deshawn's experiment because he did not perform enough trials.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Jody is trying to find out how much salt will dissolve in 200 mL of water. She adds salt to the beaker of water, but the salt seems to just sit on the bottom of the beaker. What can Jody do to help the salt dissolve?

• cool the water

• add sugar

• add food coloring

• stir the water

Tags

NGSS.MS-PS3-5

Peter is dissolving sugar in water. What can Peter do to make the sugar dissolve easier?

• cool the sugar

• add salt to the water

• cool the water

• heat the water

Tags

NGSS.MS-PS1-4

Most substances dissolve

• at a constant rate regardless of heat transfer.

• more quickly when heat is added to them.

• more quickly as heat is removed from them.

• at the same rate as all other substances.

Tags

NGSS.MS-PS1-4