Counting Atoms and Chemical Reactions

How many Magnesium are in 10MgCl₂?

• 10
• 5
• 20

Tags

NGSS.MS-PS1-1

How many Sodium (Na) are in 6NaCl?

• 1
• 12
• 6

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

Tags

NGSS.MS-PS1-1

Number of N in (NH₄)₂CrO₄

• 1
• 2
• 8
• 16

Tags

NGSS.MS-PS1-1

(Element or Compound)
       C₂H₈O 

• Element
• Letters
• Numbers
• Compound

Tags

NGSS.MS-PS1-1

A subscript is the small number below a(n) ________ that tells the number of _______ of that element.

• element symbol; atoms
• atom; element symbol
• subscript; protons
• compound; elements

Tags

NGSS.MS-PS1-1

How many Oxygen atoms are in Al₂(SO₄)₃

• 4
• 12
• 7
• 24

Tags

NGSS.MS-PS1-1

Number of H in 3(NH₄)₂CrO₄

• 4
• 2
• 8
• 24

Tags

NGSS.MS-PS1-1

Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)

• H₃SO₄
• HSO₄
• H₄S₃O
• H₂O

Tags

NGSS.MS-PS1-1