Ose

When a substance breaks down into particles inside a liquid it is called

• melting

• dissolving

• solubilizing

• chemical change

Tags

NGSS.MS-PS1-2

Which describes solubility best?

• how well a substance can change into a liquid

• how well a substance can dissolve in a liquid

Which are considered evidence that carbon dioxide gas is produced when a bath bomb is added to water? Select all that apply.

• The gas extinguishes a flame.

• The gas does not extinguish a flame.

• The gas is less dense than air.

• The gas is more dense than air.

Tags

NGSS.MS-PS1-2

How can particles of a new substance be formed out of particles of an old substance?

• Particles may break apart and rejoin in different ways, forming a substance with a new identity.

• Particles get smashed up and disappear, and new particles pop up.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

List the steps of the scientific method

d

e

f

c

b

a

Analyze results

Ask a question

Form a hypothesis

Conduct experiment

Communicate results

Draw conclusions

Tags

NGSS.MS-LS2-4

A diagram of a marine food chain is provided. Which organism in the food chain transforms energy from the Sun into food?

• Large Sharks

• Marlin

• Shrimp

• Phytoplankton

Tags

NGSS.MS-LS1-6

A diagram of a pond food chain is provided. Which of the following could possibly increase the total amount of energy the catfish population receives within its food chain?

• Increase in the number of beetles

• Increase in number of hawks

• Decrease in number of plants

• Decrease in number of hawks

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

A diagram is provided. Which of the following correctly shows one path that energy would flow through this ecosystem?

• Grasses -> Termite-> Monkey -> Eagle

• Hyena -> Mongoose -> Mouse -> Grasses

• Grasses -> Termite -> Grasshopper -> Monkey

• Acacia Trees -> Giraffe -> lion -> vulture

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What kind of sound would be heard with this type of wave?

• Quiet, low pitch

• Loud, low pitch

• Quiet, high pitch

• Loud, high pitch

Tags

NGSS.MS-PS4-1

When the speaker vibrates, why do the air particles move?

• The air particles move because the speaker pushes on the air particles.

• The air particles move because of the sound.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2