Balancing Chemical Equations

Front

Is the following equation balanced? 4Fe + 3O₂ → 2Fe₂O₃

Back

Yes, the equation is balanced.

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

Balance this equation: _Al + _HCl → _H₂ + _AlCl₃

Back

2, 6, 3, 2

Front

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

Back

Subscript

Front

What type of reaction is represented by the equation: 2HI → H₂ + I₂?

Back

Decomposition

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules are involved in the reaction.

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the same number of each type of atom appears on both sides of the equation, in accordance with the Law of Conservation of Mass.

Front

What is the difference between a reactant and a product in a chemical reaction?

Back

Reactants are substances that start a chemical reaction, while products are substances formed as a result of the reaction.

Front

What does a balanced equation indicate about the amounts of reactants and products?

Back

It indicates that the total mass of reactants equals the total mass of products.

Front

What is the general form of a chemical equation?

Back

Reactants → Products.