Chemistry I 2nd Semester Final Revie

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O
• MgO
• Mg and MgO
• O and MgO

Tags

NGSS.MS-PS1-2

Balance this equation...
H₂ + Cl₂ --> HCl

• It is balanced 
• 3H₂ + Cl_{2 -->} 6H₂Cl
• H₂ + Cl_{2 --> 2HCl}
• I don't know! Oh well.

Tags

NGSS.MS-PS1-5

Balance this equation...
HgO --> 2Hg + O₂

• It is balanced 
• 2HgO --> Hg + O₂
• 2HgO --> 2Hg + O₂
• I don't know...Oh well!

Tags

NGSS.HS-PS1-7

Balance this equation
_Zn+_HCl-->_ZnCl₂ +_H₂

• 1,1,2,1
• 1,1,1,2
• 1,2,1,1
• 2,1,1,1

Finish a blalanced equation:
Mg(OH)₂ --> __________

• Mg(OH)₂ --> MgOH
• Mg(OH)₂ --> MgO+ H₂O
  
• Mg(OH)₂ --> MgO+ H₂
• Mg(OH)₂ --> Mg+ H₂O

What type of reaction involves the breaking down of a substance into simpler substances?

• Single Replacement Reaction

• Double Replacement Reaction

• Synthesis Reaction

• Decomposition Reaction

Tags

NGSS.MS-PS1-2

What type of reaction involves 2 substances combining to form 1 new compound?

• Decomposition Reaction

• Single Replacement Reaction

• Double Replacement Reaction

• Synthesis Reaction

What type of reaction involves one element replacing another element in a compound?

• Single Replacement Reaction

• Double Replacement Reaction

• Synthesis Reaction

• Decomposition Reaction

What type of reaction involves ions from 2 compounds exchanging places to form 2 completely new compounds?

• Single Replacement Reaction

• Double Replacement Reaction

• Synthesis Reaction

• Decomposition Reaction

What type of chemical reaction is this one?

Al(OH)₃ --> Al2O3 + H2O

• Decomposition

• Combustion

• Synthesis

• Single Replacement