Chemical Reaction Classification

Classify
Zn + H₂S → ZnS + H₂

• synthesis

• combustion

• single replacement

• double replacement

Classify
CH₄ + O₂ → CO₂ + H₂O 

• single replacement

• double replacement

• synthesis

• combustion

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Classify
FeS + HCl → H₂S + FeCl₂

• synthesis

• combustion

• single replacement

• double replacement

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Classify
Fe + O₂ → Fe₂O₃

• synthesis

• decomposition

• double replacement 

• single replacement

Which of the following is a type of chemical reaction where a single compound breaks down into two or more simpler substances?

• Synthesis reaction

• Decomposition reaction

• Single displacement reaction

• Double displacement reaction

Tiana is a chemist who is making a chemical to add to swimming pools in order to make the water safer. She mixed two solid substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances.

After mixing, Tiana found two liquid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the result of a neutralization reaction between an acid and a base?

• Water and salt

• Hydrogen gas

• Carbon dioxide

• Oxygen gas

Tags

NGSS.MS-PS1-5

In a chemical reaction, how can you determine if a chemical change has occurred?

• The substance changes shape

• The substance changes color

• The substance changes state

• The substance changes temperature

Tags

DOK Level 3: Strategic Thinking

AB + CD →AD + CB

• Double Replacement

• Single Replacement

• Synthesis

• Decomposition

Tags

NGSS.MS-PS1-2

Which of the following is the general formula for a decomposition reaction?

• A + B  → AB

• AB → A + B

• AB + C → AC + B

• AB + CD → AC + BD