Is matter pure

Pure Substance

A substance consists of a single type of particle, with consistent chemical properties throughout.

Mixture

A combination of two or more pure substances, where the individual properties of each substance are retained.

Homogeneous Mixture

A mixture that has a uniform composition throughout, such as salt dissolved in water.

Heterogeneous Mixture

A mixture where the components are not uniformly distributed, and different parts can be seen, such as oil and water.

Solution

A homogeneous mixture of two or more substances, where one component (solute) is dissolved in another (solvent).

Suspension

A heterogeneous mixture in which solid particles are dispersed in a liquid but settle over time.

Colloid

A mixture where fine particles are dispersed in a continuous medium, appearing homogeneous but scattering light (e.g., milk).

Tyndall Effect

The phenomenon where light is scattered by colloidal particles, making the path of the light visible.

Solvent

The component of a solution that dissolves the solute, usually present in larger amounts.

Solute

The component in a solution that is dissolved in the solvent, usually present in lesser amounts.

Dilute Solution

A solution that contains a small amount of solute relative to the amount of solvent.

Concentrated Solution

A solution that contains a large amount of solute relative to the amount of solvent.

Saturated Solution

A solution that cannot dissolve any more solute at a given temperature and pressure.

Solubility

The maximum amount of solute that can be dissolved in a specific amount of solvent at a given temperature.

Element

A pure substance that cannot be broken down into simpler substances by chemical reactions.

Compound

A substance formed when two or more elements chemically combine in fixed proportions.

Filtration

A separation technique used to remove insoluble particles from a liquid.

Evaporation

A physical process to separate a dissolved substance from a solution by converting the liquid to vapor.

Centrifugation

A method of separating mixtures based on the density of the particles, using centrifugal force.

Chemical Change

A process in which one or more substances are transformed into new substances with different properties.

Physical Change

A change that does not alter the chemical composition of a substance, such as melting or boiling.