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The picture below shows a glass of water with ice cubes floating in it. The glass is at room temperature and the ice is slowly melting. The mass of the glass will be the same after the ice melts as it was before the ice melted. Which of these best describes why this is true?

• Matter is neither lost nor gained when ice melts.

• The particles that make up the substance get bigger as matter is lost.

• The particles that make up the substance get smaller as matter is added.

• Matter is converted into energy as the ice melts.

Tags

NGSS.MS-PS1-5

Kelly has two cubes of sugar and decides to add them to a glass of water. The mass of the sugar cubes is 6.0 grams total. And the mass of the water, glass, and straw is 520 grams total. Once the sugar dissolves in the water, what will the total mass of Kelly's drink be (including the glass and straw)?

• 83 grams

• 514 grams

• 526 grams

• 580 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

200 g of liquid water is frozen in an ice cube tray. What is the total mass of all of the ice cubes?

• More than 200 g

• Less than 200 g

• Exactly 200 g

Tags

NGSS.MS-PS1-5

Cayman left an ice cube in a cup. After an hour, the ice had changed into liquid water. The liquid water has the same _______ as the solid ice cube.

• temperature

• mass

• shape

• state of matter

Tags

NGSS.MS-PS1-4

List the steps of the scientific method

d

e

f

c

b

a

Form a hypothesis

Analyze results

Draw conclusions

Conduct experiment

Communicate results

Ask a question

Tags

NGSS.MS-PS2-2

Kyleigh is drawing with a blue pencil when she accidentally breaks it. Which of the following statements about the pencil is true?

• The total mass of the pencil increased when it was broken.

• The total mass of the pencil decreased when it was broken.

• The total mass of the pencil did not change when it was broken.

• The pencil did not undergo a physical change when it was broken.

Aden forgot to put the butter away after making breakfast. When he returned to the kitchen hours later, he noticed that the butter had mostly melted. Which property of the melted butter should be the same as the stick of solid butter?

• state of matter

• temperature

• mass

• volume

Tags

NGSS.MS-PS1-4

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

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

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-PS1-4

NGSS.MS-PS3-4