Balancing chemical equations

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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 the reaction.

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NGSS.MS-PS1-2

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 the equation.

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NGSS.MS-PS1-1

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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.

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NGSS.MS-PS1-5

Front

What does the arrow (→) in a chemical equation represent?

Back

The arrow indicates the direction of the reaction, showing that reactants are transformed into products.

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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. If they are equal, the equation is balanced.

Tags

NGSS.MS-PS1-5

Front

What is the law of conservation of mass?

Back

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

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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 help balance the equation.

Tags

NGSS.MS-PS1-5

Front

How do you balance the equation: H2 + O2 → H2O?

Back

The balanced equation is 2H2 + O2 → 2H2O.

Tags

NGSS.MS-PS1-5

Front

What is the first step in balancing a chemical equation?

Back

Identify the number of atoms of each element in the reactants and products.

Front

What does it mean if an equation is unbalanced?

Back

An unbalanced equation does not have the same number of each type of atom on both sides, indicating that mass is not conserved.

Tags

NGSS.MS-PS1-5