SC.8.P.8.1

Jason is comparing substances by investigating a ceramic cup with hot water inside and water vapor above the cup. What can he say about the motion of the particles in ALL of the substances? SC.8.P.8.1

• They do not move.

• They are always moving.

• The move past each other slowly.

• They move very fast in all directions.

Tags

NGSS.MS-PS1-4

In which state of matter are the particles able to move around one another? SC.8.P.8.1

• Gases only

• Liquids only

• Gases and liquids only

• Gases, liquids, and solids

Ben wants to model how the motion of particles changes with temperature. He considers water in an iron pot. Ben draws a model to show how the water particles and iron particles move at room temperature. Then he draws a second model to show how the water particles and iron particles move as the pot of water is heated. Based on this evidence, how should Ben’s second model differ from the first? SC.8.P.8.1

• The water particles should vibrate faster, and the iron particles should not move.

• Both the water particles and the iron particles should slide past each other faster.

• The water particles should slide past each other faster, and the iron particles should vibrate faster.

• The water particles should move freely in all directions, and the iron particles should slide past each other faster.

Tags

NGSS.MS-PS1-4

What term describes the state of matter in which the attractive forces between particles are the greatest? SC.8.P.8.1

• gas

• solid

• metal

• liquid

At room temperature, nitrogen is a gas and mercury is a liquid. Which claim describes how the particles of nitrogen gas compare to the particles of liquid mercury? SC.8.P.8.1

• The particles that make up nitrogen gas are expanding.

• The particles that make up nitrogen gas are closer together.

• The particles that make up nitrogen gas are moving more rapidly.

• The particles that make up nitrogen gas have greater attractive forces between them.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of the following is the best example of a chemical change?

• boiling water to make steam

• . burning a piece of paper to make smoke

• combing salt and water to make salt water

• freezing juice to make popsicles

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Julissa combined baking soda solution and calcium chloride solution in a beaker. She observed bubbling and a white solid formed. Julissa completed the reaction again after warming the solutions. What changes Julissa most likely see in the warm reaction?

• The bubbling and white solid formation would occur faster

• The bubbles and white solid formation would happen slower

• The bubbling or white solid formation would not be created at all

• Only the bubbling would occur, but no white solid particles would form

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following would cause only a chemical change with a sugar cube?

• Crushing the sugar cube

• . Digesting the sugar cube

• Dissolving the sugar cube in water

• Melting the sugar cube

Tags

NGSS.MS-PS1-2

Brandon dissolved 10 grams of salt in 100 mL of water to form salt water. He then boiled the solution and the water boiled away. How much salt would be left in the beaker?

• 1g

• 10 g

• 90 g

• 110 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Eduardo’s friend told him that to make his glow stick last longer, he needs to slow down the glow stick’s chemical reaction. Where would be the best location to store his glow stick?

• in a bowl of warm water

• in his closet

• under a fan

• in the freezer

Tags

NGSS.MS-PS1-4