Law of Conservation of Matter

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What is the Law of Conservation of Matter?

Back

The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What happens to the mass of products in an open system during a chemical reaction?

Back

The measurable mass might decrease because any gas produced can escape, although the actual mass remains the same.

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What are subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a compound, e.g., in 3Fe₂O₄, the subscripts are 2 and 4.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What type of reaction is represented by 2 NH₃ + H₂SO₄ → (NH₄)₂SO₄?

Back

This is a synthesis reaction, where two or more reactants combine to form a single product.

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What is a chemical equation?

Back

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

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What is the difference between a reactant and a product?

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Reactants are substances that undergo a chemical change, while products are the substances formed as a result of the reaction.

Front

What does it mean to balance a chemical equation?

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Balancing a chemical equation means adjusting the coefficients to ensure the same number of each type of atom appears on both sides.

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What is a decomposition reaction?

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A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products.

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What is a double displacement reaction?

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A double displacement reaction is a type of reaction where two compounds exchange ions or bonds to form two new compounds.