Balancing chemical equations

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What is a chemical equation?

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A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products involved.

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

Front

What are reactants in a chemical equation?

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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-PS1-2

NGSS.MS-PS1-5

Front

What are products in a chemical equation?

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

Tags

NGSS.MS-PS1-5

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms of each element is the same on both sides of the equation.

Tags

NGSS.MS-PS1-5

Front

What is the Law of Conservation of Mass?

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The Law of Conservation of Mass states that matter cannot be created or destroyed in a chemical reaction.

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; if they are equal, the equation is balanced.

Tags

NGSS.MS-PS1-5

Front

What is the significance of coefficients in a chemical equation?

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

Tags

NGSS.MS-PS1-1

Front

What is the role of subscripts in a chemical formula?

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Subscripts indicate the number of atoms of each element in a molecule.

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What is a skeleton equation?

Back

A skeleton equation is a chemical equation that shows the reactants and products but not their coefficients.

Tags

NGSS.MS-PS1-1

Front

What is the difference between a balanced equation and a skeleton equation?

Back

A balanced equation has equal numbers of each type of atom on both sides, while a skeleton equation does not.

Tags

NGSS.MS-PS1-5