Counting Atoms Unit Review

How many Carbon atoms are found in the following formula?

CH₃CH₂CH₂CH₂OH

• 4

• 1

• 5

• 11

Tags

NGSS.MS-PS1-1

How many total atoms are in the following formula?C₃H₅N₃O₉

• 20

• 21

• 19

• 4

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NGSS.MS-PS1-1

How many phosphorus atoms are in the following formula?

NaH₂PO₄

• 1

• 4

• 2

• 6

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NGSS.MS-PS1-1

Which formulas have the same number of oxygen atoms? (choose all the options that have the same amount of oxygens)

• 4NaHCOO

• 6LiClO₂

• Hg₃(PO₄)₂

• 8HgO

Tags

NGSS.MS-PS1-1

How many total atoms are in the following chemical formula?

2Ga(C₂H₃O₂)₃

• 44

• 8

• 22

• 16

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NGSS.MS-PS1-1

How many Sulfur atoms are in Al₂(SO₄)₃

• 4

• 3

• 7

• 24

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NGSS.MS-PS1-1

How many hydrogen atoms are in the following chemical formula 3Na(O₂H)₃?

• 3

• 6

• 9

• 1

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NGSS.MS-PS1-1

What part of a chemical formula tells you how many atoms there are?

• Subscript

• Coefficient

• Parenthesis

What part of a chemical formula tells you how many molecules there are?

• Subscript

• Coefficient

• Parenthesis

Which formula has twice as many hydrogen atoms as this one:

Ga(OH)₃

• 3HCONH₂

• HC₆H₇O₆

• 4H₂CrO₄

• H₂SO₄

Tags

NGSS.MS-PS1-1