Law of Conservation of Mass

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What does the Law of Conservation of Mass state?

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Mass is never created or destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-5

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How many atoms of Calcium are in the compound Ca(OH)2?

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1 atom of Calcium.

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NGSS.MS-PS1-1

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If a reaction starts with 20g of reactants, what should the total mass of the products be?

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20g of products.

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NGSS.MS-PS1-5

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What is the term for the substance formed as a result of a chemical reaction?

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Product.

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NGSS.MS-PS1-2

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What is a coefficient in a chemical equation?

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A number in front of a compound or element indicating the number of molecules or atoms.

Tags

NGSS.MS-PS1-5

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What is the significance of balancing a chemical equation?

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To ensure that the mass of reactants equals the mass of products, in accordance with the Law of Conservation of Mass.

Tags

NGSS.MS-PS1-5

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What happens to the number of atoms during a chemical reaction?

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The number of atoms remains the same; they are rearranged to form new substances.

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NGSS.MS-PS1-5

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Can mass be lost or gained in a closed system during a chemical reaction?

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No, mass cannot be lost or gained; it remains constant.

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NGSS.MS-PS1-5

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What is the role of reactants in a chemical reaction?

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Reactants are the starting substances that undergo a chemical change.

Tags

NGSS.MS-PS1-1

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What is the difference between a reactant and a product?

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Reactants are the substances that start a chemical reaction, while products are the substances formed as a result.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5