Balancing Equations

Front

Law of Conservation of Mass

Back

It states that matter cannot be created or destroyed.

Front

What is a coefficient?

Back

The large number in front of a chemical formula.

Front

What is the part of the chemical equation in green called?
Fe + S --> FeS

Back

reactants

Front

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

Back

Subscript

Front

What coefficient should be used to balance the equation? N₂ + O₂ --> _NO

Back

2

Front

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

Back

2Na + 2H₂O --> 2NaOH + H₂

Front

How many elements are in C₆H₁₂O₆?

Back

3

Front

H₂O: Element or compound?

Back

compound

Front

How many HCl molecules do you need to balance this equation? Mg + __HCl ---> MgCl₂ + H₂

Back

2

Front

Is this balanced?
Al + O₂ → 2Al₂O₃

Back

No