Counting atoms

What does the subscript in a chemical formula tell you? (a)  

• How many molecules are present
• How many atoms are present
• How many elements are present
• How many neutrons are present

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

• 6

• 1

• 12

Tags

NGSS.MS-PS1-1

• Iron, Oxygen

• Francium, Europium, Oxygen

• Ferrium, Oxygen

• Berylium, Oxygen

Tags

NGSS.MS-PS1-1

• 2

• 4

• 3

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

• Co
• O₂
• C
• CO₂

Tags

NGSS.MS-PS1-1

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

• 6
• 3
• 9
• 1

Tags

NGSS.MS-PS1-1

When a COEFFICIENT is out in front, such as 4 Fe(NO₃)₃ + CaCO₃ --> , the 4

• applies only to the Fe

• applies to everything after it

• applies to all the elements after is in the compound it is in front of

• 1

Tags

NGSS.MS-PS1-5

How many atoms of nitrogen are in 2 Fe(NO₃)₃ ?

• 5

• 6

• 2

• 1

Tags

NGSS.MS-PS1-1

How many Hydrogen atoms are in 4 H₂O?

• 6

• 8

• 2

• 4

Tags

NGSS.MS-PS1-1