Balancing Chemical Equations

Front

What is the Law of Conservation of Mass?

Back

It states that no matter can be created or destroyed.

Front

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 make the equation N₂+O₂--> _NO balanced?

Back

2

Front

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

Back

2Na + 2H₂O --> 2NaOH + H₂

Front

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

Back

2

Front

Balance this equation: _Al +_HCl --> _H₂ +_AlCl₃

Back

2,6,3,2

Front

What is the right part of a chemical equation called...
2H_{2 +} O₂ --> 2H₂O

Back

Products

Front

Is the following equation balanced?
2C₂H₂ + 5O₂ --> 4CO₂ + 2H₂O

Back

yes