Counting Atoms in a Compound Practice

How many atoms are in O₂ ?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

How many atoms of each element are in NaCl?

• Na=1, Cl=1

• Na=2. Cl=2

• Na=1, Cl-2

Tags

NGSS.MS-PS1-1

C₆H₁₂O₆ has how many total atoms?

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

How many elements are in this substance: CaCO₃

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

5 N₂O represents the laughing gas you might have at the dentist. How many atoms of nitrogen are present here?

• 1

• 2

• 7

• 10

Tags

NGSS.MS-PS1-1

How many Magnesium atoms are in 10MgCl₂?

• 10

• 5

• 20

Tags

NGSS.MS-PS1-1

How many atoms of Oxygen are in Fe(NO₃)₃ ?

• 6
• 3
• 9
• 1

Tags

NGSS.MS-PS1-1

What is a coefficient?

• The small number on the right of the chemical symbol.
• The large number to the left of a formula.

Tags

NGSS.MS-PS1-5

How many atoms are present if there is no subscript following the element symbol?

• 0

• 2

• only 1

• 1 million

Tags

NGSS.MS-PS1-1

How many Hydrogen atoms in 3(NH₄)₂CrO₄?

• 4

• 2

• 8

• 24

Tags

NGSS.MS-PS1-1