Balancing Chemical Equations

Front

What is the Law of Conservation of Mass?

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The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of reactants equals the total mass of products.

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What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

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What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What happens to the density of a substance when it is cut in half?

Back

The density remains the same; density is an intrinsic property of a material.

Front

What is a reactant in a chemical equation?

Back

A reactant is a substance that undergoes a chemical change in a reaction.

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What is a product in a chemical equation?

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A product is a substance that is formed as a result of a chemical reaction.

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What is a balanced chemical equation?

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A balanced chemical equation has the same number of each type of atom on both sides of the equation, reflecting the conservation of mass.

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What does it mean to balance a chemical equation?

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Balancing a chemical equation involves adjusting the coefficients of the reactants and products to ensure that the number of atoms for each element is equal on both sides.

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What is an example of a physical change?

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An example of a physical change is the melting of ice into water.

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What is an example of a chemical change?

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An example of a chemical change is the reaction between baking soda and vinegar, producing carbon dioxide gas.