Reactions

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, following the law of conservation of mass.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

How many hydrogen atoms are in NH3O5?

Back

3

Front

How many hydrogen atoms are in 4H2O?

Back

8

Front

What does it mean for a reaction to be balanced?

Back

It means that the number of atoms for each element is the same on both sides of the equation.

Front

What is the formula for water?

Back

H2O

Front

What is the product of the reaction between sodium and water?

Back

Sodium hydroxide (NaOH) and hydrogen gas (H2).

Front

What is the general form of a chemical reaction?

Back

Reactants → Products.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of each substance involved in the reaction.

Front

Is the reaction Al + O2 → 2Al2O3 balanced?

Back

No, it is not balanced.