Balanced Equations

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What is a balanced equation in chemistry?

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

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NGSS.MS-PS1-5

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How can you tell if a chemical equation is balanced?

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You can tell if a chemical equation is balanced by counting the number of atoms of each element on both sides of the equation and ensuring they are equal.

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NGSS.MS-PS1-5

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What is the role of coefficients in a chemical equation?

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Coefficients are the numbers placed in front of compounds in a chemical equation to indicate how many molecules or moles of that substance are involved in the reaction.

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What does the subscript in a chemical formula represent?

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The subscript indicates the number of atoms of the element in one molecule of the compound.

Tags

NGSS.MS-PS1-1

Front

In the formula H2O, what does the '2' signify?

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The '2' signifies that there are two hydrogen atoms in one molecule of water.

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NGSS.MS-PS1-1

Front

What happens if a chemical equation is not balanced?

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If a chemical equation is not balanced, it violates the law of conservation of mass, meaning that the equation does not accurately represent the reaction.

Tags

NGSS.MS-PS1-5

Front

What is the first step in balancing a chemical equation?

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The first step in balancing a chemical equation is to write down the number of atoms of each element present in the reactants and products.

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Can you change the subscripts when balancing a chemical equation?

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No, you cannot change the subscripts when balancing a chemical equation, as this would change the identity of the compound.

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What is the significance of balancing chemical equations in real-world applications?

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Balancing chemical equations is crucial for accurately predicting the amounts of reactants and products involved in chemical reactions, which is important in fields like chemistry, engineering, and environmental science.

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NGSS.MS-PS1-5

Front

What is the difference between a reactant and a product in a chemical equation?

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Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result of the reaction.

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