Balancing Chemical Equations Practice

Determine the balanced equation for each of the following: 
Al + HCl --> AlCl₃ + H₂

• Al + HCl --> AlCl₃ + H₂

• Al + 3HCl --> AlCl₃ + 3H₂

• Al + 3HCl --> AlCl₃ + H₂

• 2Al + 6HCl --> 2AlCl₃ + 3H₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Determine the balanced equation for each of the following: 
C₂H₆O + O₂ --> CO₂ + H₂O

• C₂H₆O + 3O₂ --> 2CO₂ + H₂O

• C₂H₆O + O₂ --> CO₂ + H₂O

• C₂H₆O + 3O₂ --> 2CO₂ + 3H₂O

• 2C₂H₆O + 3O₂ --> 2CO₂ + 3H₂O

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!

• No!

Tags

NGSS.MS-PS1-5

Is the following reaction balanced?
NaHCO₃ --> Na₂CO₃ + H₂O + CO₂

• yes

• no

Tags

NGSS.MS-PS1-5

Balance this equation...
HgO --> Hg + O₂

• It is balanced 

• 2HgO --> Hg + O₂

• 2HgO --> 2Hg + O₂

• I don't know...Oh well!

Tags

NGSS.MS-PS1-5

Balance this equation...
H₂ + Cl₂ --> HCl

• It is balanced 

• 3H₂ + Cl_{2 -->} 6H₂Cl

• H₂ + Cl_{2 -->} 2HCl

Tags

NGSS.MS-PS1-5

What does the Law of Conservation of Mass state?

• Matter cannot be gained or lost in a chemical reaction.

• Matter can only be lost in a chemical reaction.

• Matter can only be gained in a chemical reaction.

• Matter can be gained and lost in a chemical reaction. 

Tags

NGSS.MS-PS1-5

What is the number before a chemical formula called?
Ex: 2H₂ + O₂ --> 2H₂O

• Coefficient

• Subscript

• Atom

• Equation

Tags

NGSS.MS-PS1-5

Balance this equation:
 2Li + Cl₂ -> LiCl

• 2Li + Cl₂ -> 4LiCl2

• 2Li + Cl₂ -> LiCl₂

• 2Li + Cl₂ -> 2LiCl

Tags

NGSS.MS-PS1-5

Balance this equation:
P₄+O₂  -->  P₂O₃

• 3 P₄+ O₂ --> 2 P₂O₃

•  P₄+ O₂ --> 2 P₂O₃

•  P₄+ 3 O₂ --> 2 P₂O₃

•  P₄+ 2 O₂ --> 3 P₂O₃

Tags

NGSS.MS-PS1-5