Science LEAP Review

Camryn observed 50mL of a clear substance. She poured it from a cup into a bag and noticed that it flowed, and took the shape of the container, but the volume did not change. She then poured it into a container shaped like a box and noticed that again, it flowed and took the shape of the new container, but its volume remained the same. What state of matter was the substance that Camryn was observing?

• liquid

• solid

• plasma

• gas

When water freezes, its particles

• move closer together

• move farther apart

• stay in the same position

• evaporate

Tags

NGSS.MS-PS1-4

What is a phase change?

• change of a substance from one state of matter to another

• when a solid turns into a liquid.

• when water evaporates.

• when ice freezes.

Tags

NGSS.MS-PS1-4

Melting and boiling occur when particles _____________

• slow down because heat has been taken away.

• speed up because heat has been taken away.

• slow down because heat has been added.

• speed up because heat has been added.

Tags

NGSS.MS-PS1-4

What is the freezing point of water?

• 0*C

• 32*C

• 100*C

• 10*C

A student mixes 20 grams of ice and 20 grams of water in a glass. He leaves the water and ice out on a table for 30 minutes. He returns to find the ice has completely melted in the glass.

What is the mass of the water in the glass?

• 40g

• 0g

• 20g

• 30g

Tags

NGSS.MS-PS1-5

What type of systems do the pictures represent?

• jar system

• open system

• closed system

• science system

What type of systems do the pictures represent?

• jar system

• open system

• closed system

• science system

Characteristics that can be observed (by using your 5 senses) or measured without changing the object:

• Physical properties

• Chemical properties

• Real estate property

• None of the above

What is conservation of mass?

• to add mass to an object

• to take mass away from an object

• mass of an object is not destroyed, it just changes form

Tags

NGSS.MS-PS1-5