Identifying types of reactions and Law of Conservation of Mass

Front

What is a coefficient in a chemical equation?

Back

A coefficient is the number that appears before a formula in a chemical equation, indicating the number of molecules or moles of that substance.

Front

What is an open system in chemistry?

Back

An open system is a type of system that allows matter and energy to flow freely in and out.

Front

How do you balance a chemical equation?

Back

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

Front

What is a chemical equation?

Back

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

Front

What does it mean if a chemical equation is balanced?

Back

A balanced chemical equation has the same number of atoms of each element on both sides, adhering to the Law of Conservation of Mass.

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 reactants equals the total mass of products.

Front

What is a closed system in chemistry?

Back

A closed system is a type of system that does not allow matter to enter or leave, but can exchange energy with its surroundings.

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What is the difference between a subscript and a coefficient?

Back

A subscript indicates the number of atoms of an element in a molecule, while a coefficient indicates the number of molecules or moles of a substance.

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What happens if you change the subscript in a chemical formula?

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Changing the subscript in a chemical formula changes the identity of the substance, while changing the coefficient alters the quantity of the substance.

Front

What is the purpose of balancing a chemical equation?

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The purpose of balancing a chemical equation is to ensure that the same number of each type of atom is present on both sides of the equation, in accordance with the Law of Conservation of Mass.