Unit 2 Science Test

Alan used a steel shovel to plant some flowers in his garden. When he finished, he stuck the shovel into the damp soil. A few weeks later, Alan took the shovel out of the ground. The surface of the shovel had a reddish color. What happened to the shovel?

• The shovel rusted in the damp soil.

• The steel changed into aluminum.

• The shovel burned in the hot sun.

• The steel changed into copper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Juan made spaghetti. He cooked the pasta, meatballs, and tomato sauce. Juan then combined these ingredients in a bowl.

Which term describes the spaghetti shown in the picture?

• alloy

• mixture

• conductor

• solution

Marco’s breakfast is shown in the picture. Did mixing the cereal with the milk make a new substance?

• Yes, because the color of the milk changed.

• Yes, because the sugar dissolved and the cereal got wet.

• No, because mixing substances cannot make new substances.

• No, because he can separate the cereal from the milk to get the original substances back.

Tags

NGSS.5-PS1-4

During an experiment, a student measures the mass of ice and of liquid water and then places the mixture into a freezer for a day. The table shows the data. What will the student have at the end of the experiment?

• 100 grams of ice

• 125 grams of ice

• 125 grams of liquid water

• 150 grams of liquid water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

NGSS.MS-PS3-4

NGSS.MS-PS3-5

All objects contain matter. Which statement is true?

• Matter is usually measured in milliliters.

• The shape of an object is what gives it matter.

• Matter is a measurement of how big an object is.

• As matter is added to an object, its weight increases.

A glass is filled half full of water and half full of ice. The weight of the ice and water is 250 milligrams. Which sentence describes the weight of the water when the ice melts in the glass?

• It will weigh 250 milligrams.

• It will weigh a little less than 250 milligrams.

• It will weigh twice as much as 250 milligrams.

• It will weigh a little more than 250 milligrams.

Tags

NGSS.MS-PS1-5

What does the picture tell you about the notebook and cubes?

• The notebook and the cubes have no weight.

• The notebook has less weight than the cubes.

• The notebook and cubes have the same weight.

• The notebook has more weight than the cubes.

Tags

NGSS.5-PS1-2

The states of matter are different in many ways, including shape and volume. These three figures show the particles in a solid, a liquid, and a gas. Which number is correctly paired with the state of matter?

• 1: liquid

• 2: solid

• 2: liquid

• 3: gas

When a candle wick burns, the wax around the wick melts and appears to become smaller in size. Which statement is true?

• All the changes taking place are physical changes.

• All the changes taking place are chemical changes.

• The weight of the matter is greater before it is burned.

• The weight of the matter is the same before and after it is burned.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A half-eaten apple is left on a counter and turns brown. Which of these is evidence a chemical change took place?

• The apple changed color.

• Half of the apple was eaten.

• The apple is softer.

• The apple is warmer to the touch.

Tags

NGSS.MS-PS1-2