Balancing Chemical Equations (U4)

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products involved.

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 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

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms for each element is the same on both sides of the equation.

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; it is conserved.

Front

How do you determine the number of atoms in a compound?

Back

To determine the number of atoms in a compound, add the subscripts of each element in the chemical formula.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula in an equation to indicate how many molecules or moles of that substance are involved.

Front

How many oxygen atoms are in 2H2O?

Back

There are 2 oxygen atoms in 2H2O.

Front

What is the balanced equation for the combustion of methane (CH4)?

Back

The balanced equation is CH4 + 2O2 → CO2 + 2H2O.

Front

What is the purpose of balancing chemical equations?

Back

The purpose of balancing chemical equations is to accurately represent the quantities of reactants and products involved in a reaction.