balancing and types of reactions

What does the Law of Conservation of Mass state?

• Matter cannot be gained or lost in a chemical reaction.
• Matter can only be lost in a chemical reaction.
• Matter can only be gained in a chemical reaction.
• Matter can be gained and lost in a chemical reaction. 

Tags

NGSS.HS-PS1-7

What is the left part of a chemical equation called...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Tags

NGSS.MS-PS1-5

What is the right part of a chemical equation called...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

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...
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 reaction: ____ Na₃PO₄ + ____ KOH ---> ____ NaOH + ____ K₃PO₄

• 1,3,3,1
• 1,3,2,1
• 2,3,3,1
• 1,1,3,1

Tags

NGSS.HS-PS1-7

Balancing this reaction: ____ CH₄ + ____ O₂ ---> ____ CO₂ + ____ H₂O

• 2,1,3,1
• 1,2,1,2
• 1,2,2,1
• 2,1,1,2

Tags

NGSS.HS-PS1-7

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.HS-PS1-7

Balance this reaction: ____ GaF₃ + ____ Cs ---> ____ CsF + ____ Ga

• 1,1,3,1
• 1,2,3,1
• 2,3,3,1
• 1,3,3,1

Tags

NGSS.HS-PS1-7

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.HS-PS1-7