Review - Balancing Chemical Equations

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

Tags

NGSS.MS-PS1-5

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 a chemical equation.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Front

What are products in a chemical equation?

Back

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

Tags

NGSS.MS-PS1-5

Front

How do you determine if a chemical equation is balanced?

Back

To determine if a chemical equation is balanced, count the number of atoms of each element on both sides of the equation and ensure they are equal.

Tags

NGSS.MS-PS1-5

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 and are used to balance the equation.

Tags

NGSS.MS-PS1-5

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; the total mass of reactants equals the total mass of products.

Tags

NGSS.MS-PS1-5

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means adjusting the coefficients of the reactants and products to ensure that the same number of each type of atom appears on both sides.

Tags

NGSS.MS-PS1-5

Front

What is the role of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule; they are not changed when balancing equations.

Front

Can you change the subscripts to balance a chemical equation?

Back

No, you cannot change the subscripts of a chemical formula to balance an equation, as this would change the identity of the substance.

Tags

NGSS.MS-PS1-5

Front

What is an example of a balanced chemical equation?

Back

An example of a balanced chemical equation is: 6CO2 + 6H2O -> C6H12O6 + 6O2.

Tags

NGSS.MS-PS1-5