Balancing and Classifying Chemical Reactions

Pb(NO₃)₂  +  KI --> PbI₂ + KNO₃
What type of reaction is this? 

• Synthesis 

• Decomposition 

• Single Replacement

• Double Replacement 

Tags

NGSS.MS-PS1-2

What type of reaction is this?  
__H₂O₂ ---->  __H₂O + O₂

• Synthesis

• Decomposition 

• Single Replacement

• Combustion 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mg + HCl --> MgCl₂ + H₂

• combustion

• synthesis

• decomposition

• single replacement

Tags

NGSS.MS-PS1-5

Mg + N₂ →Mg₃N₂

• Synthesis

• Decomposition

• Single replacement

• Combustion

Tags

NGSS.MS-PS1-5

In chemical reactions, what does the principle of conservation of mass mean?

• Matter is not created or destroyed.

• The total mass of the reactants is greater than the total mass of the products.

• The total mass of the reactants is less than the total mass of the products.

• Matter is not changed.
  

Tags

NGSS.MS-PS1-5

What do the coefficients need to be in the following equation in order to be balanced?
_Mg + _Cl₂ → _MgCl₂

• 1, 2,1

• already balanced

• 2,1,1

• 1,1,2

Tags

NGSS.MS-PS1-5

What are the correct coefficients when this equation is balanced?
KClO₃  --> KCl  +  O₂

• 2,2,2

• 2,2,3

• 1,2,3

• 3,3,3

Tags

NGSS.MS-PS1-5

Balance this reaction: ____ NaF + ____ Br₂ ---> ____ NaBr + ____ F₂

• 3,1,2,1

• 1,2,3,4

• 2,1,2,1

• 1,2,1,2

Tags

NGSS.MS-PS1-5

Balance this reaction: ____ BaS + ____ PtF₂ ---> ____ BaF₂ + ____ PtS

• 1,1,1,1

• 1,2,1,1

• 1,1,1,2

• 2,1,1,1

Tags

NGSS.MS-PS1-5

Identify the number in blue.

• Product

• Reactant

• Coefficient

• Subscript

Tags

NGSS.MS-PS1-5