Final Review

A student writes in a laboratory notebook:

I placed a piece of iron in a beaker of water and the iron sank to the bottom of the beaker.

What the student wrote in the laboratory notebook is an example of a(n):

• observation

• prediction

• hypothesis

• inference

Which change is the best example of a physical change?

• a cookie baking

• ice cream melting

• paper burning

• a nail rusting

Which activity is an example of a chemical change?

• dissolving table salt in water

• hammering aluminum into thin sheets

• melting gold to make jewelry

• burning wood to produce ashes

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student placed a rock in a graduated cylinder containing water, causing the water level in the cylinder to increase by 20 mL. This increase represents the rock’s:

• mass

• solubility

• temperature

• volume

Hydrogen and oxygen are classified as

• organisms

• energy

• elements

• minerals

All living and nonliving material are composed of

• air

• water

• elements

• soil

Tags

NGSS.MS-LS2-3

NGSS.MS-PS1-1

See image.

• 1

• 2

• 3

• 4

A student added some sugar to a glass of water, but it did not dissolve quickly. What could the student do to increase the rate at which the sugar dissolves in the water?

• freeze the water

• heat the water

• add salt to the water

• filter the water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The elements fluorine, chlorine, bromine, and iodine are all found in the same group (17) on the table. These elements are grouped together because they

• are metals

• react in similar ways

• are noble gases

• have the same atomic mass

Tags

NGSS.MS-PS1-1

Water (H₂O) is not found on the Periodic Table of the Elements because water

• a mixture

• a liquid

• a compound

• an atom

Tags

NGSS.MS-PS1-1