Chemistry Physical and Chemical Changes Quiz

A chemical equation that only shows the species directly involved in the reaction, excluding spectator ions.

Ions that appear on both sides of a complete ionic equation and do not participate in the reaction.

A chemical equation that shows all of the ions present in the solution before and after the reaction.

A reaction that involves the formation of a solid precipitate.

A change in the chemical composition of a substance, often involving the breaking and forming of chemical bonds.

A change in the physical state or appearance of a substance, without altering its chemical composition.

A visual representation of a chemical reaction or physical process at the molecular level.

A chemical equation that shows the exact number of atoms and molecules of each substance involved in a reaction.

The process of breaking chemical bonds during a physical change, usually involving the formation of new interactions. Example: Dissolving salt in water breaks ionic bonds and forms ion-dipole interactions.

The amount of product that would be produced if the reaction went to completion and all reactants were consumed.

The actual amount of product obtained in a reaction.

The ratio of the actual yield to the theoretical yield, expressed as a percentage.

The reactant that limits the amount of product that can be formed in a reaction.

The reactant that is not completely consumed in a reaction.

The process of calculating the amount of reactants or products involved in a chemical reaction, using the balanced chemical equation.

The coefficients in a balanced chemical equation represent the relative amounts of reactants and products involved in the reaction. These coefficients can be used to calculate mole ratios.

A change in a substance that alters its physical properties, but not its chemical composition. Examples include changes in state (solid, liquid, gas), formation of mixtures, and separation of mixtures. No new substances are formed.

A change in a substance that results in the formation of a new substance with a different chemical composition. Chemical changes involve the breaking and forming of chemical bonds.

Evidence that suggests a chemical change has taken place. Examples include changes in color, temperature, the formation of a gas or precipitate, and the production of an odor.

Breaking and forming of chemical bonds that results in the creation of new chemical substances. Examples include burning, cooking, rusting, and neutralization reactions.

A process where a substance changes its physical state, but not its chemical composition. Examples include melting, freezing, sublimation, deposition, condensation, and evaporation.

A phenomenon where the bonds between hydrogen and oxygen atoms in a water molecule are broken and reformed, leading to a change in physical state, such as evaporation.

A visible solid that forms from a solution during a chemical reaction, indicating a new substance has formed.

A change in the color of a substance, indicating that a new substance has been formed during a chemical reaction.

The point in a titration where the analyte is completely reacted with the titrant.

The solution of known concentration used in a titration.

The solution of unknown concentration in a titration.

A piece of laboratory glassware designed to accurately measure and deliver small volumes of liquid.

A chemical reaction that goes to completion, meaning all reactants are converted to products.

The observable change that indicates the equivalence point in a titration.

A technique used to determine the concentration of a solution by reacting it with a solution of known concentration.

A chemical reaction where electrons are transferred from one substance to another.

The process of losing electrons in a chemical reaction, resulting in an increase in oxidation number.

The process of gaining electrons in a chemical reaction, resulting in a decrease in oxidation number.

A number assigned to an element in a compound or ion to represent its oxidation state or degree of electron loss or gain.

A type of chemical reaction where a compound reacts with oxygen to produce heat and light.

A chemical reaction where a compound breaks down into two or more simpler compounds or elements.

A chemical reaction where two or more substances combine to form a single, more complex substance.