Chemical Reactions and Equations

Front

What is a chemical reaction?

Back

A process where reactants transform into products, involving the breaking and forming of chemical bonds.

Front

What are reactants in a chemical equation?

Back

Substances that undergo change during a chemical reaction, found on the left side of the equation.

Front

What are products in a chemical equation?

Back

Substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

What do coefficients in a chemical equation represent?

Back

The number of molecules of each reactant and product involved in the reaction.

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both sides, obeying the law of conservation of mass.

Front

How do you determine if a chemical equation is balanced?

Back

By counting the number of atoms of each element on both sides of the equation and ensuring they are equal.

Front

What is the law of conservation of mass?

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A principle stating that mass is neither created nor destroyed in a chemical reaction.

Front

What is a phase change in a chemical reaction?

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A transition of a substance from one state of matter (solid, liquid, gas) to another during a reaction.

Front

What is the significance of the state symbols (s, l, g, aq) in a chemical equation?

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They indicate the physical state of the reactants and products: solid (s), liquid (l), gas (g), and aqueous solution (aq).

Front

What is the role of a catalyst in a chemical reaction?

Back

A substance that speeds up a chemical reaction without being consumed in the process.