Counting Atoms REVIEW

How many Hydrogen atoms are in 4 H₂O? ​ (a)   How many oxygen atoms? ​ (b)  

• 8
• 4
• 1
• 2
• 3
• 5
• 6
• 7
• 9

Tags

NGSS.MS-PS1-1

How many O's are in Al₂(SO₄)₃

Tags

NGSS.MS-PS1-1

3(NH₄)₂CrO₄

Number of N: ​ ​ (a)  

Number of H: ​ (b)  

Number of Cr: ​ (c)  

Number of O: ​ (d)  

• 6
• 24
• 3
• 12
• 4
• 8
• 1
• 2
• 9

Tags

NGSS.MS-PS1-1

How many elements are in 2 C₆H₁₂O₇? (a)  

How many C: ​ (b)  

How many H: ​ (c)  

How many O: ​ (d)  

How many TOTAL atoms: ​ (e)  

• 3
• 12
• 24
• 14
• 50
• 7
• 6
• 25
• 52
• 60

Tags

NGSS.MS-PS1-1

2 CH₂CO₃OH

Number of C: ​ (a)  

Number of H: ​ (b)  

Number of O: ​ (c)  

• 4
• 6
• 8
• 2
• 3
• 1
• 5
• 7
• 9
• 10

Tags

NGSS.MS-PS1-1

How many Sulfur's are in Al₂(SO₄)₃

• 4

• 3

• 7

• 12

Tags

NGSS.MS-PS1-1

How many Nitrogen atoms are in the in H₃C₂ON₅?

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

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

• 6
• 3
• 9
• 1

Tags

NGSS.MS-PS1-1

Match the element to the number of atoms it has.

2 Al(C₂H₃O₄)₂

• 12

• oxygen

• 8

• aluminum

• 2

• hydrogen

• 16

• carbon

Tags

NGSS.MS-PS1-1

What does the subscript in a chemical formula tell you?

• How many molecules are present

• How many atoms are present

• How many elements are present

• How many neutrons are present

Tags

NGSS.MS-PS1-1