Writing Chemical Equations Balancing and Types of Reactions

This pictures simulates what type of reaction?

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Tags

NGSS.MS-PS1-2

Which problem is balanced?
(Check ALL answers)

• PbO₂ + 2H₂

• SO₂ + H₂0 --> H₂SO₄

• 2Na + 2H₂O --> 2NaOH + H₂

The numbers needed to balance the equation are:

• 2, 7, 6, 4

• 2, 1, 3, 2

• 3, 1, 1, 3

• 2, 3, 1, 3

Tags

NGSS.HS-PS1-7

CxHy +O₂ --> H₂O + CO₂

• Decomposition

• Double replacement

• Combustion

• Single Replacement

What is the left part of a chemical equation called?
H_{2 +} O → H₂O

• Reactants

• Products 

• Yields 

• Chemical Equation 

What reaction has the following general formula:

AB --> A + B

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO 

• 1

• 2

• 3

• 4

Which number should go in the blank?
Mn + _ HNO₃ → Mn(NO₃)₂ + H₂

• 1

• 2

• 3

• 0

Combustion reactions will always involve

• Oxygen and a solid

• Liquid nitrogen and heat

• Oxygen and heat/energy

• CO and H₂O