Counting Elements in Compounds

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

Which of the following chemical formulas represents a compound? 

• C₃
• O₂
• CH₃CHO
• H₂

Tags

NGSS.MS-PS1-1

Can be found on the periodic table

• Element
• Compound
• MIxture

What is krypton?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

What is water?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

A new compound has been discovered. Here is the chemical formula:
CHOFeNaNPb 

How many elements are in this compound?

• 5
• 6
• 7
• 10

Tags

NGSS.MS-PS1-1

How many different elements are represented in the compound?
Fe₃O₄

• 2
• 3
• 1
• 4

Tags

NGSS.MS-PS1-1

How many different elements are represented in the compound?
C₁₃H₉N

• 2
• 3
• 1
• 4

Tags

NGSS.MS-PS1-1

How many different elements are represented in the compound?
CH₄

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many atoms are in NaHCO₃

• 4

• 3

• 6

• 8

Tags

NGSS.MS-PS1-1