Advanced Chemistry: Chemical Equations and Reactions Flash Cards

Front

What is a chemical reaction?

Back

A process by which one or more substances are changed into one or more different substances with new physical and chemical properties.

Front

What is a chemical equation?

Back

A representation with symbols and formulas indicating relative molecular or molar amounts of reactants and products in a chemical reaction.

Front

What are reactants and products in a chemical equation?

Back

Reactants are substances that start a chemical reaction, and products are substances that are produced in the reaction.

Front

What is the Law of Conservation of Mass?

Back

Mass is neither created nor destroyed, only changed and rearranged in a chemical reaction.

Front

What is the Law of Conservation of Energy?

Back

Energy cannot be created or destroyed; it can only be changed.

Front

What is an endothermic equation?

Back

An equation where energy is absorbed, and the energy term is written as a reactant.

Front

What is an exothermic equation?

Back

An equation where energy is released, and the energy term is written as a product.

Front

What are evidences of chemical reactions?

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Production of gases, formation of a precipitate, evolution of heat/light, and color change.

Front

What are diatomic molecules?

Back

Molecules composed of two atoms of the same element, such as H2, O2, N2, F2, Cl2, Br2, I2.

Front

What are binary acids?

Back

Acids with the prefix 'Hydro', a stem, and the suffix 'ic'.