Balancing Equations

Front

Coefficient

Back

The large number to the left of a formula.

Front

Which side of a chemical equation is the product side? Options: Left (before the arrow), Right (after the arrow)

Back

Right (after the arrow)

Front

Which side of a chemical equation is the reactant side?

Back

Left (before the arrow)

Front

Which problem is balanced? Options: PbO₂ + 2H₂, SO₂ + H₂0 --> H₂SO₄, 2Na + 2H₂O --> 2NaOH + H₂

Back

2Na + 2H₂O --> 2NaOH + H₂

Front

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

Back

No

Front

What is the little number after an element in a chemical equation called?
Example: H₂

Back

Subscript

Front

What does the arrow in a chemical equation (H_{2 +} O --> H₂O) represent?

Back

Produces

Front

Balance this equation
_Zn+_HCl-->_ZnCl₂ +_H₂

Back

1,2,1,1

Front

Balance this equation:
_Mg + _Cl₂ --> _MgCl₂

Back

already balanced

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.