Chemical Reaction Benchmark Review 24-25

Front

What is a balanced chemical equation?

Back

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

Front

What is a chemical reaction?

Back

A chemical reaction is a process where substances (reactants) are transformed into new substances (products) through the breaking and forming of chemical bonds.

Front

What is the conservation of mass?

Back

The 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 an example of a chemical reaction?

Back

An example of a chemical reaction is vinegar reacting with baking soda to produce carbon dioxide gas.

Front

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

Back

A physical change alters the form or appearance of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.

Front

What does it mean if a chemical equation is not balanced?

Back

If a chemical equation is not balanced, it means that the number of atoms of at least one element is different on the reactant side compared to the product side.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

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A product is a substance that is formed as a result of a chemical reaction.

Front

What is the role of coefficients in a chemical equation?

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Coefficients are numbers placed in front of compounds in a chemical equation to indicate the number of molecules or moles of that substance.

Front

What is an example of a correctly balanced chemical equation?

Back

An example of a correctly balanced chemical equation is: 2H2 + O2 -> 2H2O.