Reactions & Balancing Equations

Parts of an Equation

Law of Conservation of Mass

What's your reaction?

Counting elements

Will it react? hint: check the activity series

100

In an equation, this is on the left side of the arrow.

What is reactants?

100

This is the reason we balance equations.

What is the law of conservation of mass? What is reactants must equal products?

100

Mg + O₂ → MgO

What is a synthesis reaction?

100

This is how many hydrogen atoms are in 3H₂0.

What is 6?

100

Zn + HCl →

Yes

Zn + 2HCl → ZnCl₂ + H₂

200

On the right side of an equation, this is on the right side of the arrow.

What is products?

200

This number is NEVER adjusted when balancing equations.

What is the subscript?

200

LiF → Li + F₂

What is a decomposition reaction?

200

This is how many sulfur atoms are in (SO₄)₂

What is 2?

200

Co + KBr →

No.

300

This little number appears after the element

What is the subscript?

300

This is an equation where each side had the same numbers of atoms for each element represented.

What is a balanced equation?

300

C₆H₁₄ + O₂ → CO₂ + H₂0

What is a combustion reaction?

300

Is 2Al + 6HCl → 2AlCl₃ + 3H₂ balanced?

What is yes?

300

Al + CuCl₂ →

Yes

2Al + 3CuCl₂ → 2AlCl₃ + 3Cu

400

This is the whole number that appears in front of a formula in a chemical equation.

What is a coefficient?

400

This is the definition of the Law of Conservation of Mass.

What is matter cannot be created or destroyed, only transformed? What is reactants equal products?

400

Li + HCl → LiCl +H₂

What is a single replacement reaction?

400

Is 3N₂+ H₂ → 2NH₃ balanced?

What is No?

400

Pb + FeSO₄→

500

This is the only number you are allowed to manipulate when balancing equations.

What is the coefficient?

500

T/F: New atoms are formed as products in all chemical reactions.

What is false?

500

This is the solid that is formed in a chemical reaction in solution, this solid is separate from the solution.

What is a precipitate?

500

Balance this equation __HCl + __Na → __NaCl + __H₂

2, 2, 2, 1

2HCl + 2Na → 2NaCl + H₂

500

Zn + NaCl →