Chemical Reactions Review

__Al + __Fe₃N₂ -->__AlN + __Fe

• already balanced
• 4,2,4,6
• 2,1,2,3
• 1,2,1,3

Tags

NGSS.HS-PS1-7

__Na + __Cl₂ --> __NaCl

• 1,1,2
• 2,1,2
• 2,1,1
• already balanced

Tags

NGSS.HS-PS1-7

__H₂O₂ --> __H₂O + __O₂

• already balanced
• 2,1,1
• 2,2,1
• 2,1,2

Tags

NGSS.HS-PS1-7

__H₂O + __CO₂ --> __C₇H₈ + __O₂

• 4,7,1,9
• 4,7,1,7
• 2,3,1,3
• already balanced

Tags

NGSS.HS-PS1-7

__NaClO₃ --> __NaCl + __O₂

• 2,2,2
• 2,2,3
• 3,2,2
• 1,2,3

Tags

NGSS.HS-PS1-7

__(NH₄)₃PO₄ + __Pb(NO₃)₄ --> __Pb₃(PO₄)₄ + __NH₄NO₃

• 2,1,1,6
• 1,2,2,3
• 4,3,1,12
• 4,2,1,12

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-2

__BF₃ + __Li₂SO₃ --> __B₂(SO₃)₃ + __LiF

• 2,3,1,3
• 2,3,1,6
• 4,4,2,12
• 3,3,1,9

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-2

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

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

• Matter is not changed

• The total mass of the reactants is greater than the mass of the product

• Mass is neither created or destroyed

• The total mass of the product is greater than the total mass of the reactants

Which is generalized equation represents a decomposition reaction

• AB—> A+B

• A+B—>AB

• A+BC—> AC+B

• AB+CD—>AD+CB