Chemical Reactions

Front

What is a chemical reaction?

Back

A process in which reactants are transformed into products through the rearrangement of atoms.

Front

What are reactants in a chemical reaction?

Back

The starting materials that undergo a change during the reaction.

Front

What are products in a chemical reaction?

Back

The new substances formed as a result of a chemical reaction.

Front

How can you tell if a chemical change has occurred?

Back

A new substance is formed, which is different from the original reactants.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What is a balanced chemical equation?

Back

An equation that has the same number of each type of atom on both sides, indicating that mass is conserved.

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What is the difference between a chemical change and a physical change?

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A chemical change results in the formation of new substances, while a physical change does not alter the substance's chemical identity.

Front

What is the role of coefficients in a chemical equation?

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Coefficients indicate the number of molecules or moles of each reactant and product involved in the reaction.

Front

What does it mean to balance a chemical equation?

Back

To adjust the coefficients so that the number of atoms of each element is the same on both sides of the equation.

Front

What is combustion in terms of chemical reactions?

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A chemical reaction that typically involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water.