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.

Tags

NGSS.MS-PS1-5

Front

What does it mean if an equation is unbalanced?

Back

An unbalanced equation does not have the same number of atoms of each element on both sides, which violates the law of conservation of mass.

Tags

NGSS.MS-PS1-5

Front

What is the purpose of balancing chemical equations?

Back

Balancing chemical equations ensures that the same amount of matter is present before and after a chemical reaction, reflecting the conservation of mass.

Tags

NGSS.MS-PS1-5

Front

What is a coefficient in a chemical equation?

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A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.

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What is a subscript in a chemical formula?

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A subscript is a small number written to the right of an element symbol that indicates the number of atoms of that element in a molecule.

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What are reactants in a chemical equation?

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Reactants are the starting substances that undergo a chemical change in a reaction, found on the left side of the equation.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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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-PS1-1

NGSS.MS-PS1-5

Front

What does the arrow in a chemical equation represent?

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The arrow in a chemical equation represents the direction of the reaction, indicating that reactants are transformed into products.

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How do you determine if a chemical equation is balanced?

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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 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