CHEM Exam 2

Consider the following equation: 2Na+2H20 -> 2NaOH+H2

• Na

• NaOH

• NaOH and H2

• Na and H20

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NGSS.HS-PS1-7

The name of the compound with the formula AlCl3 is

• aluminum chloride

• aluminum trichloride

• aluminum(III) chloride

• monoaluminum trichlorine

In which group do all atoms have one valence electron in the ground state?

• alkali metals

• halogens

• alkaline earth metals

• noble gases

Tags

NGSS.HS-PS1-1

When the equation below is balanced, the coefficient of silver nitrate is:

• 1

• 2

• 0

• 3

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NGSS.HS-PS1-7

The electrons in the outermost energy level of an atom are called

• orbital electrons.

• group electrons.

• valence electrons.

• core electrons.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which substance has ionic bonds?

• NH3

• Br2

• H20

• Ki

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NGSS.HS-PS1-3

In a nonpolar covalent bond, electrons are

• transferred.

• uncharged.

• shared unequally.

• shared equally.

A iodide ion is

• I^+

• I^-

• I^2+

• I^-

The formula of sodium chromate is

• Na2CrO4

• Na3(CrO4)2

• NaCrO4

• Na2Cr

Which orbital will have the lowest energy?

• 4s

• 3p

• 2p

• 3d

Tags

NGSS.HS-PS1-1