Post test review MCF

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Tags

NGSS.MS-PS1-1

Which of the following could be a symbol on he periodic table of elements?

• JZ
• jz
• Jz
• JZa

How much Oxygen is in our air?

• 78%
• 21%
• 1%
• 100%

Tags

NGSS.MS-PS1-1

How much Nitrogen is in our air?

• 78%
• 21%
• 1%
• 100%

In a pie graph showing gases in our air, what gas makes up 3/4 of the graph?

• Nitrogen
• Oxygen
• Other gases

A cliff formed near the ocean.  Which statement best describes how this cliff formed?

• Warm air melted the rock.
• Sun rays evaporated the rock.
• Ocean waves washed away rock.
• Plant roots pushed away the rock.

Tags

NGSS.MS-ESS2-2

The natural chemical or physical processes that breaks down rock on Earth's surface.

• weathering
• erosion
• deposition
• jackhammering

Tags

NGSS.MS-ESS2-2

Ice floats when placed in a liquid water because:

• ice is less dense than the liquid
• ice is more dense than the liquid
• ice is soluble
• water is adhesive

Which is an electron?

• A
• B
• C

Tags

NGSS.MS-PS1-1