Balancing Chemical Equations

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, indicating that mass is conserved during a chemical reaction.

Tags

NGSS.MS-PS1-5

Front

What does the coefficient in a chemical equation represent?

Back

The coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products until the number of atoms of each element is the same on both sides.

Tags

NGSS.MS-PS1-5

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Tags

NGSS.MS-PS1-5

Front

In the equation 2Li + Cl₂ → 2LiCl, how many lithium (Li) atoms are present?

Back

There are 2 lithium (Li) atoms present.

Tags

NGSS.MS-PS1-1

Front

In the compound 3Cr(MnO₄)₆, how many manganese (Mn) atoms are there?

Back

There are 18 manganese (Mn) atoms.

Tags

NGSS.MS-PS1-1

Front

How many carbon (C) atoms are in C₆H₁₂O₆?

Back

There are 6 carbon (C) atoms.

Tags

NGSS.MS-PS1-1

Front

How many hydrogen (H) atoms are in 4H₂O?

Back

There are 8 hydrogen (H) atoms.

Tags

NGSS.MS-PS1-1

Front

What is the purpose of balancing chemical equations?

Back

The purpose is to ensure that the same number of each type of atom is present on both sides of the equation, reflecting the conservation of mass.

Tags

NGSS.MS-PS1-5

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Tags

NGSS.MS-PS1-1