Chemical Equations

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 for a chemical equation to be balanced?

Back

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

Front

How do you determine the number of elements in a chemical formula?

Back

Count the different capital letters in the formula; each represents a different element.

Front

What is the significance of coefficients in a chemical equation?

Back

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

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the formula for calculating the number of atoms in a molecule?

Back

Add the subscripts of each element in the chemical formula.

Front

What does the arrow in a chemical equation represent?

Back

The arrow indicates the direction of the reaction, separating reactants from products.

Front

What is a diatomic molecule?

Back

A diatomic molecule consists of two atoms of the same or different elements, such as O2 or HCl.