Chemical Equations

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What is a chemical equation?

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

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What are reactants in a chemical equation?

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Reactants are the starting substances that undergo a chemical change in a reaction.

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What are products in a chemical equation?

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Products are the substances formed as a result of a chemical reaction.

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What does it mean for a chemical equation to be balanced?

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

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How do you determine the total number of atoms in a compound?

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To find the total number of atoms in a compound, multiply the subscript of each element by the coefficient in front of the compound and sum them up.

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What is the coefficient in a chemical equation?

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A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.

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What is a subscript in a chemical formula?

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A subscript is a small number written to the right of an element symbol that indicates the number of atoms of that element in a molecule.

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How many total atoms are in 4NH3?

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There are 16 total atoms in 4NH3 (4 Nitrogen + 12 Hydrogen).

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How many hydrogen atoms are in 4NH3?

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There are 12 hydrogen atoms in 4NH3.

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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.