Chemical Equations

Parts of a chemical equation

100

What does the arrow mean? 

What is yields

200

What do you call the number in front of the molecule?

What is A coefficient 

300

What do you call the molecules on the left side of the arrow?

What is a reactants

400

What do you call the molecules on the right side of the arrow?  

What are products

500

What do the subscripts after the element represent? 

What is the number of atoms present

Balancing chemical equations

100

NH₃ + O₂ > NO + H₂O

4NH₃ + 5O₂ > 4NO + 6H₂O

200

CH₄ + O₂ > CO₂ + H₂O

CH₄ + 2O₂ > CO₂ + 2H₂O

300

NaBr + Cl₂ > NaCl + Br₂ 

2NaBr + Cl₂ > 2NaCl + Br₂ 

400

AgI + Na₂S > Ag₂S + NaI

2AgI + Na₂S > Ag₂S + 2NaI

500

Fe + H₂SO₄ > Fe₂(SO₄)₃ + H₂

2Fe + 3H₂SO₄ > Fe₂(SO₄)₃ + 3H₂

Are they balanced?

100

2CH₄ + O₂ > 2CO₂ + H₂O 

What is no

CH₄ + 2O₂ > CO₂ + 2H₂O

200

Xe + 3F₂ > XeF₆

What is yes 

300

PCl₅ + 4H₂O > H₃PO₄ + 4HCl 

What is no 

PCl₅ + 4H₂O > H₃PO₄ + 5HCl

400

2BF₃ + 3Li₂SO₃ > 2B₂(SO₃)₃ + 6LiF

What is no 

2BF₃ + 3Li₂SO₃ > B₂(SO₃)₃ + 6LiF

500

Be₂C + 4H₂O > 1Be(OH)₂ + CH₄

What is yes