SPS3. Conservation of Mass and Balancing Equations

Front

What is the Law of Conservation of Mass?

Back

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

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What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more substances combine to form a new compound.

Front

Provide an example of a synthesis reaction.

Back

An example of a synthesis reaction is: 2Na + Cl₂ → 2NaCl.

Front

What does a coefficient in a chemical equation represent?

Back

A coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

What does the subscript in a chemical formula indicate?

Back

A subscript indicates the number of atoms of an element in a molecule.

Front

How do you balance a chemical equation?

Back

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

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What is the difference between a reactant and a product?

Back

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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What is a decomposition reaction?

Back

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

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What is a double replacement reaction?

Back

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

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What is a single replacement reaction?

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A single replacement reaction is a type of chemical reaction where one element replaces another element in a compound.