Writing Chemical Equations Balancing and Types of Reactions

What is the type of reaction shown above?

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

This pictures simulates what type of reaction?

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Identify the reaction type:

C₂H₆ + O₂ --> CO₂ + H₂O

• Double replacement

• Synthesis

• Acid base

• Combustion

Identify the reaction type for the following equation:

K + F₂ --> KF

• Double replacement

• Single Replacement

• Synthesis

• Decomposition

Some students decomposed potassium chlorate powder into potassium chloride and oxygen gas. Which equation for this reaction is correctly balanced?

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which set of coefficients will correctly balance the following chemical reactions?

• 1,2,1,2

• 2,1,2,1

• 1,2,1,1

• 2,1,1,1

Tags

NGSS.HS-PS1-7

Identify the type of chemical reaction

• Synthesis

• Decomposition

• Single replacement

• Double replacement

• Combustion

Balance this equation.
_CH₄ + _O₂ --> _CO₂ + _H₂O

• 1,2,1,1

• 2,1,2,1

• 1,2,1,2

• 0,2,0,2

Tags

NGSS.MS-PS1-5

How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl₂ + H₂

• 1

• 2

• 3

• 4

Which problem is balanced?

• PbO₂ + 2H₂

• SO₂ + H₂0 --> H₂SO₄

• 2Na + 2H₂O --> 2NaOH + H₂