Predicting products

What kind of reaction is this:
2H₂ + O₂ --> 2H₂O

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

Answer explanation

Two or more elements/ compounds combine to make a more complex substance.

Ex: A + B --> AB

Tags

NGSS.MS-PS1-1

What kind of reaction is this:
2H₂O₂ →2 H₂O + O₂

• Synthesis
• Decomposition
• Single Replacement 
• Combustion

Answer explanation

Compounds break down 

into simpler substances.

Ex: AB --> A + B

Tags

NGSS.MS-PS1-5

What kind of reaction is this:
2C₃H₇OH +9O₂ -> 6CO₂ + 8H₂O

• Double Replacement
• Combustion
• Single Replacement
• Decomposition

Answer explanation

Reactants: A hydrocarbon and oxygen

Products: water and carbon dioxide

Tags

NGSS.MS-PS1-2

What kind of reaction is this:
Fe + CuSO₄ -> Cu + FeSO₄

• Double Replacement
• Decompostion
• Single Replacement
• Combustion

Answer explanation

Reactants: a single element and a compound

Products: a new compound and a different single element

Ex: A + BC --> AC + B

The reaction below is an example of?
AgNO₃ + NaCl → AgCl + NaNO₃

• Single Replacement

• Double Replacement

• Decomposition

• Combustion

Answer explanation

Reactants: 2 compounds

Products: 2 new compounds

(a.k.a. ion swap)

Ex: AB + CD --> AD + CB

Tags

NGSS.MS-PS1-5

What kind of reaction is this:
 CaCO₃ + Ag₂SO₄ → CaSO₄ + Ag₂CO₃ 

• Decomposition
• Single Replacement
• Double Replacement
• Combustion

Answer explanation

Reactants: 2 compounds

Products: 2 new compounds

Ex: AB + CD --> AD + CB

Tags

NGSS.MS-PS1-2

Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?

• double replacement 
• decomposition 
• combustion 
• single replacement

Answer explanation

Reactants: A hydrocarbon and oxygen

Products: water and carbon dioxide

Which of the following general formulas represents a single-displacement reaction?

• AB → A + B   
• A + B → AB
• A + BC → AC + B
• AB + CD → AD + CB

Answer explanation

Reactants: a single element and a compound

Products: a new compound and a different single element

The cations in two compounds switch. 

• Synthesis
• Combustion
• Single Replacement
• Double Replacement

Answer explanation

Reactants: 2 compounds

Products: 2 new compounds

Ex: AB + CD --> AD + CB

What are the products of this reaction?

Zn(s) + H₂SO₄(aq) -->

• Zn(SO₄)₂ + H

• ZnSO₄ + H₂

• ZnSO₄ + H

• Zn₂SO₄ + H₂

• No reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5