Counting Atoms - Molecular Formulas

What is the best definition for subscript?
 

• The big number that tells you the number of molecules.
• The atomic number
• The little number that tells the number of atoms for each element.

Tags

NGSS.MS-PS1-1

What is the best definition for molecule? 

• A molecule is formed when two or more atoms join together chemically.
• A molecule is made of only one atom. 

Tags

NGSS.MS-PS1-1

What is the best formula for this molecule?

• 2H₂O
• H₃O
• H₂O₂
• H₂O

Tags

NGSS.MS-PS1-1

What is the best formula for this molecule?

• C₃H₂
• C₃H₈
• CH
• CH₈

Tags

NGSS.MS-PS1-1

What is the total number of atoms in this molecule?

• 2
• 4
• 1
• 6

Tags

NGSS.MS-PS1-1

What is the total number of atoms in this molecule?

• 11
• 3
• 8
• 10

Tags

NGSS.MS-PS1-1

How many elements are in this chemical formula?

HCl

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many atoms of Carbon are in this formula? $C_{6\ }H_{12}O_6$  

• 6

• 1

• 12

Tags

NGSS.MS-PS1-1

What elements are represented in this chemical formula?  $Fe_2O_3$  

• Iron, Oxygen

• Francium, Europium, Oxygen

• Ferrium, Oxygen

• Berylium, Oxygen

Tags

NGSS.MS-PS1-1

What is the total number of atoms in this formula? $H_2O_2$  

• 2

• 4

• 3

Tags

NGSS.MS-PS1-1