Chem Regents

Where are valence electrons located?

• First shell

• Second shell

• Outermost shell

• Third shell

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

If you have four moles of H atoms, how many atoms do you have?

• 2.408 x 10²³

• 2.408 x 10²⁴

• 2.4086 x 10²⁴

• 1.408 x 10²⁴

What is a possible excited state electron configuration for Phosphorus?

• 2-8-8

• 2-9

• 2-8-2-3

• 2-8-5

Tags

NGSS.HS-PS1-1

Going across the periodic table, ionization energy...

• increases

• decreases

• stays the same

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What does the Lewis Dot diagram represent?

• First shell electrons

• Valence electrons

• Atomic mass

• Atomic number

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NGSS.HS-PS1-1

When are ionic bonds formed?

• When 2 metals bond together

• When 2 nonmetals bond together

• When a metal and nonmetal bonds together

If I have 6H₂O, how many H atoms do I have?

• 2

• 6

• 12

• 1

Tags

NGSS.MS-PS1-1

What is the charge of a proton?

• +2

• 0

• -1

• +1

The atomic number of Mercury is...

• 80

• 72

• 44

• 78

Tags

NGSS.HS-PS1-1

What is the mass of 6 moles of H₂O?

• 108.12 g/mol

• 120 g/mol

• 108.12 u