Balancing Equations -1

1. 1. When balancing equations, which numbers can be adjusted?

• Coefficients only

• Subscripts only

• Either Coefficients or Subscripts.

2. 2. Balance and choose the correct coefficients:

 ___ HgO     →      ___Hg    +     ___O₂   

• 1, 1, 1

• 1, 2, 1

• 2, 2, 1

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-2

3. 3. What type of reaction is:

5.  ___ HgO     →      ___Hg    +     ___O₂   

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

4. 4. Balance and choose the correct coefficients:

___Ca(ClO₃)₂    →   ___CaCl₂   +   ___ O₂

• 1, 1, 3

• 1, 1, 1

• 1, 2, 3

Tags

NGSS.HS-PS1-7

5. 5. Identify the type of reaction:

___Ca(ClO₃)₂    →   ___CaCl₂   +   ___ O₂

• Synthesis

• Decompostion

• Single Replacement

• Double Replacement

6. 6. Balance the reaction and choose the correct coefficients:

___Fe₂O₃  +   ___C   →   ___CO₂  +   ___Fe

• 2, 3, 3, 4

• 1, 1, 1, 1

• 2. 2, 2, 1, 2

Tags

NGSS.HS-PS1-7

7. 7. Identify the type of reaction:

___Fe₂O₃  +   ___C   →   ___CO₂  +   ___Fe

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

8. 8. Balance the reaction and choose the correct coefficients:

___ C   +   ___S₈   →   ___CS₂

• 1, 1, 1

• 1, 1, 8

• 4, 1, 4

9. 9. Identify the type of reaction:

 C   +   S₈   →   CS₂

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

10. 10. Balance the reaction and choose the correct coefficients:

___ K   +  ___ B₂O₃   →   ___ K₂O  + ___ B

• 1, 1, 1, 1

• 6, 1, 3, 2

• 4, 2, 1, 2

Tags

NGSS.HS-PS1-7