Balancing Equations

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled
• the product is half the mass of the reactants
• the mass is the same
• the mass changes depending on the reaction

Tags

NGSS.MS-PS1-5

What is the arrow in a chemical equation...

H_{2 +} O₂ --> H₂O

• Reactants

• Products

• Yields

• Chemical Equation

Tags

NGSS.MS-PS1-5

Name the part in red:

H₂ + O₂ -> H₂O

• Coefficient
• Product
• Yield
• Subscript

Tags

NGSS.HS-PS1-7

Name the part in red:

_2_H₂ + _1_O₂ -> _2_H₂O

• Coefficient
• Product
• Yield
• Subscript

Tags

NGSS.HS-PS1-7

Name the part in red:

H₂ + O₂ -> H₂O

• Coefficient
• Product
• Reactant
• Subscript

Tags

NGSS.MS-PS1-1

Name the part in red:

H₂ + O₂ -> H₂O

• Coefficient
• Product
• Reactant
• Subscript

Is this equation balanced?

• yes
• no
• Not enough information
• Left side is balanced

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this balanced?
Al + O2 → 2Al₂O₃

• Yes
• No

Tags

NGSS.MS-PS1-5

N₂ + H₂ = NH₄

• Balanced
• Unbalanced

Tags

NGSS.MS-PS1-5

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1