Changes to Matter

An ice cube melts to become water in a cup. How will the ice cube and the water be the same?

• They have the same shape.

• They have the same temperature.

• They have the same mass.

• They have the same volume.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

NGSS.MS-PS3-4

How are solids and liquids different?

• Solids have a lower density than liquids do.

• Solids have a greater volume than liquids do.

• Solids have a definite mass, but liquids do not.

• Solids have a definite shape, but liquids do not.

Tags

NGSS.MS-PS1-4

A learner is able to separate a substance into its components through physical means. The substances is most likely...

• an element

• a compound

• a mixture

• a molecule

A cup of gravel and a cup of sand are poured into a bucket. Which action, if any, will create a homogenous mixture (a brand new substance?)

• adding cement to the mixture

• stirring the mixture vigorously

• adding water to the mixture

• nothing; they will always be a heterogeneous mixture (two different substances)

Juan left his bicycle in the sun and the seat got hot. What does the sun do the motion of molecules in the seat?

• increases the motion

• decreases the motion

• does not change the motion

• changes the motion but in no detectable pattern

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following pairs of states of matter indicates condensing?

• gas to liquid

• liquid to gas

• liquid to solid

• solid to liquid

Tags

NGSS.MS-PS1-4

Cooling a liquid (such as water) causes a change to occur so that liquid water becomes______.

• a gas

• a solid

• a vapor

• wetter

Tags

NGSS.MS-PS1-4

Which of these processes depends on the intensity of visible light?

• photosynthesis

• blowing of wind

• condensation of water

• formation of ozone layer

Tags

NGSS.MS-LS1-6

Which of the following is taken in through the atmosphere through leaves to make food for plants?

• carbon dioxide

• glucose

• oxygen

• hydrogen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Photosynthesis takes place in the chloroplasts of plant cells. Which gas is released during this process?

• nitrogen

• hydrogen

• carbon dioxide

• oxygen

Tags

NGSS.MS-LS1-6