Balancing equations

Front

What is a balanced equation?

Back

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

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Front

What does it mean when an equation is unbalanced?

Back

An unbalanced equation has a different number of atoms of one or more elements on each side, meaning mass is not conserved.

Tags

NGSS.MS-PS1-5

Front

What is the law of conservation of mass?

Back

The law states that in a chemical reaction, the total mass of the reactants equals the total mass of the products.

Tags

NGSS.MS-PS1-5

Front

How do you determine if a chemical equation is balanced?

Back

Count the number of atoms of each element on both sides of the equation and compare them.

Tags

NGSS.MS-PS1-5

Front

What is the purpose of balancing chemical equations?

Back

Balancing chemical equations ensures that the law of conservation of mass is followed, showing that matter is neither created nor destroyed.

Tags

NGSS.MS-PS1-5

Front

What is a reactant in a chemical equation?

Back

A reactant is a substance that undergoes a chemical change in a reaction.

Front

What is a product in a chemical equation?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

Balance the equation: H₂ + O₂ → H₂O

Back

2H₂ + O₂ → 2H₂O

Tags

NGSS.MS-PS1-5

Front

What does it mean to balance an equation using coefficients?

Back

Coefficients are numbers placed before compounds in a chemical equation to indicate how many molecules participate in the reaction.

Tags

NGSS.MS-PS1-5

Front

What is the balanced form of the equation: C₃H₈ + O₂ → CO₂ + H₂O?

Back

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Tags

NGSS.MS-PS1-5