LockeD! Reach for the STAARs (5.5A) #1

Students investigate the physical properties of some substances. They draw a table to show how the substances can be grouped. The students need to complete the table with column headings. Which column headings should the students use for their table?

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A student filled each of four beakers with 100mL of water at 25°C. The student added an equal amount of a different substance to each of the beakers of water. Based on the student's observations in the table, how many of the substances did NOT dissolve in the water?

• 1 substance

• 2 substances

• 3 substances

• 4 substances

Tags

NGSS.MS-PS1-2

A student wants to classify four different objects based on physical properties. The student uses the questions shown in the table to test each object. Which statement correctly identifies two of the materials based on the classification of properties in the table?

• Material 1 is a rubber ball. Material 2 is a piece of cardboard.

• Material 2 is an aluminum washer. Material 3 is a copper wire.

• Material 3 is a piece of cardboard. Material 4 is an aluminum washer.

• Material 1 is a copper wire. Material 4 is a rubber ball.

Tags

NGSS.MS-PS3-3

The table lists some physical properties of two objects. Based on their properties, which of the objects is most likely a metal?

• Object 1, because it is a solid that is less dense than water.

• Object 2, because all metals float in water.

• Object 2, because metals conduct thermal energy and electricity.

• Object 1, because it can be used to provide insulation for thermal energy.

Students are investigating properties of objects. They observe four objects and record observations for each object in the table. Based on the students' observations, which of these tables properly identifies the objects?

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Tags

NGSS.5-PS1-3

A student measured out 10 mL of four clear liquids and added on drop of a different colored dye to each liquid. One of the liquids was water. The student then carefully poured each liquid into a graduated cylinder and let the mixture settle for 30 minutes. The student observed that the liquids had separated into layers, as shown in the diagram. Which of these procedures would help the student identify the layer of water?

• Stir the liquids, let them settle, and then identify the bottom layer as water.

• Drop a piece of ice into the graduated cylinder, let the ice settle, and then identify the layer just above the ice as water.

• Add water to the graduated cylinder, let the mixture settle, and then identify the layer that increases in volume as water.

• Carefully pour each layer into separate plastic containers, place the containers in a freezer, and then identify the liquid that takes the longest to freeze as water.

Tags

NGSS.MS-PS1-2

A student is asked to design a sleeve for a cup that will insulate thermal energy and not feel hot to the touch when the cup is filled with hot liquid. The student has four materials to choose from. Which of these materials is least useful as an insulator?

• Cardboard

• Aluminum

• Rubber

• Plastic

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS3-3

NGSS.MS-ETS1-2

For an investigation a teacher dropped a bolt into a container of maple syrup and asked students to remove it without touching the syrup. The students first tried to use a strong magnet to remove the bolt, but it remained on the bottom of the container. They finally poured the syrup into another container to get the bolt out. Which of these best describes some of the bolt's physical properties?

• The bolt is magnetic and has the same density as the maple syrup.

• The bolt is nonmagnetic and more dense than the maple syrup.

• The bolt is nonmagnetic and less dense than the maple syrup.

• The bolt is magnetic and less dense than the maple syrup.

Tags

NGSS.MS-PS1-2

Two wires carrying electricity can create a spark if they come too close together. This spark can start a fire. Wires carrying electricity are usually covered with plastic to keep them from starting a fire. Why does the plastic keep the electricity from starting a fire?

• Plastic is good insulator.

• Plastic can melt when heated.

• Plastic is softer than wire.

• Plastic conducts electricity.

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-5

A student puts four objects in a bucket filled with water. The objects are listed. Which two objects are most likely less dense than the water?

• Wood block and metal paper clip.

• Plastic ball and glass marble.

• Metal paper clip and glass marble.

• Wood block and plastic ball.

Tags

NGSS.MS-PS1-2