Balancing Equations Practice

Front

What is the coefficient for hydrochloric acid in the reaction: Mg + ___ HCl → MgCl₂ + H₂?

Back

2

Front

Balance the equation: P₄ + O₂ → ___ P₂O₃

Back

P₄ + 3 O₂ → 2 P₂O₃

Front

How many Magnesium atoms are in 10MgCl₂?

Back

10

Front

How many Aluminum atoms are in Al₂O₃?

Back

2

Front

Balance the equation: 2Li + Cl₂ → ___ LiCl

Back

2Li + Cl₂ → 2LiCl

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

Define a balanced equation.

Back

A balanced equation has equal numbers of each type of atom on both sides of the equation.

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 or moles are involved.

Front

What does it mean to balance a chemical equation?

Back

To balance a chemical equation means to ensure that the number of atoms for each element is the same on both sides.

Front

What is the product of the reaction between lithium and chlorine?

Back

The product is lithium chloride (LiCl).