Balancing Equations

Front

What are reactants in a chemical equation?

Back

Reactants are the substances that undergo a chemical change in a reaction, found on the left side of the equation.

Front

What does the arrow in a chemical equation represent?

Back

The arrow indicates the direction of the reaction, showing that reactants are transformed into products.

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

How do you determine if a chemical equation is balanced?

Back

A chemical equation is balanced when the number of atoms of each element is the same on both sides of the equation.

Front

What is the law of conservation of mass?

Back

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

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides, ensuring mass conservation.

Front

How many atoms of oxygen are in the equation 2H2 + O2 -> 2H2O?

Back

There are 2 atoms of oxygen on the reactant side and 2 atoms of oxygen on the product side, making it balanced.

Front

What is the coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a compound to indicate how many molecules or moles of that compound are involved in the reaction.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is crucial for accurately representing the quantities of reactants and products involved in a reaction.

Front

What is the balanced equation for the reaction of iron(III) chloride and calcium hydroxide?

Back

The balanced equation is 2FeCl3 + 3Ca(OH)2 -> 2Fe(OH)3 + 3CaCl2.