Molecular Formulas

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?

• 2H₂O₂
• 6H₂O₂
• 6H₁₂O₁₂
• 6HO

Tags

NGSS.MS-PS1-1

What is the best formula for these molecules?

• H₂O
• H₂O₂
• 3H₂O
• 4H₂O

Tags

NGSS.MS-PS1-1

How many carbon atoms (C) are in a CO₂ molecule?

• 1
• 2
• 3
• 0

Tags

NGSS.MS-PS1-1

How many Oxygen atoms (O) are in a  molecule  of CO₂

• 1
• 2
• 3
• 0

Tags

NGSS.MS-PS1-1

How many Hydrogen atoms (H) are in a molecule of H₂O?

• 1

• 2

• 3

• 0

Tags

NGSS.MS-PS1-1

How many oxygens atoms ( O )atoms in a molecule of H₂O?

• 1
• 2
• 3
• 0

Tags

NGSS.MS-PS1-1

The small number to the right of an elemental symbol  ( H₂₎ is called?

•  a subscript 
• a coefficient 
• a variable 
• a divisor 

The smallest building block of matter is the......................

• compound 
• molecule 
• atom
• fluid

Tags

NGSS.MS-PS1-1

When a molecule is made up of more than two different elements ( Example CO₂)  we call this .......................

• a mixture 
• atom
• a compound 

Tags

NGSS.MS-PS1-1