SCIENCE - Pure Substances & Mixtures

Pure Substances & Mixtures

MATTER

anything that has mass and occupies space

PURE SUBSTANCE

is made of single kind of matter with certain properties

MIXTURE

is a physical combination of two or more substance which has different components

HOMOGENEOUS MIXTURE

is a mixture whose components appear the same throughout

SOLUTION

is a homogeneous mixture in which two or more components are so evenly mixed that the separate components cannot be seen

PHASE

any part of the mixture that has same properties and uniform distribution of components

SOLVENT

a component which can dissolve different compounds to form a solution

SOLUTE

a component that is dissolved in a solution

HETEROGENEOUS MIXTURE

has components that do not mix uniformly; it has two or more phases.

SUSPENSION

is a heterogeneous mixture that contains particles big enough to be seen by the naked eye; when the mixture is shaken, the particles become suspended in the water, but they start to settle when the shaking stops

COLLOID

A mixture that contains particles that are too small to be seen; they can be mixed in such a way that they remain evenly distributed without settling at the bottom of the container

Methods of Separation of Mixtures

Picking by Hand; Decantation; Filtration; Evaporation; Distillation, Sieving & Magnetic

PICKING BY HAND

its a process of separating large, visible components

DECANTATION

a process of separating immiscible liquids or liquid from heavy solid by pouring

FILTRATION

it uses filter paper or medium to separate insoluble solids from liquids

RESIDUE

its the solid that was left in the filter

FILTRATE

liquid that passes through

EVAPORATION

heating solution until liquid evaporates, leaving solute behind

DISTILLATION

is the process of separating liquid components from a liquid solution.

SIEVING

is the method of separating the particles or components of a mixture, based on different sizes using a sieve or strainer.

MAGNETIC SEPARATION

its a process that use magnet to pick up metals in a mixture that contains magnetic and nonmagnetic components