Types of Reactions and Balancing

Which type of reaction is:

8 Ag₂S → 8 S + 16 Ag

• Synthesis

• Decomposition

• Single Displacement

• Double Displacement

Predict the products of this synthesis reaction: H₂ + Cl₂ →

• HCl

• H₂Cl₂

• H₂Cl

• HCl₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which type of reaction is:

2 H₃AsO₄ → As₂O₅ + 3 H₂O

• Synthesis

• Decomposition

• Single Displacement

• Combustion

When the equation is balanced what are the correct coefficients?

• 1, 1, 2

•  1, 3, 1

• 2, 2, 3

• 2, 3, 2

Tags

NGSS.HS-PS1-7

What are the correct coefficients when the equation is balanced?

• 2, 3, 4

• 4, 3, 2

• 1, 1, 2

• 2, 1, 1

Tags

NGSS.HS-PS1-7

When balancing a chemical equation, you can only change _________, you can never change _______!

• coefficients, subscripts

• subscripts, coefficients

• formulas, subscripts

• coefficients, formula units

Which coefficients are required to correctly balance the equation: 
C₂S₂ + O₂ → CO₂ + S₂O

• 1, 2, 3, 2

• 2, 5, 4, 2 

• 2, 4, 5, 2

• 2, 3, 5, 2 

Tags

NGSS.HS-PS1-7

The number of atoms you begin with in a chemical reaction...

• must be the same as the number of atoms you end with

• must be an even number

• can be different to the number you finish with

• changes depending on how much energy is formed

Tags

NGSS.HS-PS1-7

What type of reaction involves a fuel being burned in the presence of oxygen in order to produce carbon dioxide and water?

• single replacement

• synthesis

• double replacement

• combustion

Tags

NGSS.HS-PS3-4

Which type of reaction is:

C₇H₁₆ + 10 O₂ → 7 CO₂ + 8 H₂O

• Synthesis

• Decomposition

• Single Displacement

• Combustion