Can be separated into their different component substances by physical change
We can easily see that it is composed of different substances
We cannot easily see that it is composed of diferent substances.
It is a homogeneous mixture that is formed of different amounts of two or more puere substances.
It's the main component in a solution; it is usually a liquid but not necessary
It is the dissolved substance in a solution.
2.3 SEPARATION TECHNIQUES
Is used to separate liquids with different densities that are not mutually soluble (inmmiscible).
Is used to separate an undissolved solid from a liquid. The mixture is passed through filters
2.3.3 MAGNETIC ATTRACTIONS
Is used to separate mixtures of powdered solids into different sized particles
Is used to remove solid solutes from a liquid solution
A solution is heated and then slowly cooled, or the solvent is evaporated off.
Particles of a homogeneous solute (pure substance) gradually form crystals at the bottom of the container.
It is used to saparate mutually soluble liquids in a solution. When the solution is heated and boils, the liquids separate because they have different boiling points.
3.1 Characteristic Properties
3.1.1 Melting Point
It's the temperature at which a pure substance in solid state changes into a liquid. For each substance, this is the same at the freeezing point.
3.1.2 Boiling Point
Is the temperature at which a pure substance in a liquid state changes into gas. For each substance, this is same at the condensation point.
It is the ratio of a pure substance's mass to its volumen. Density is constant in all states.
It is a pure substance that cannot be broken down into a simpler substance.
It ias a pure substance composed of two or more elements. These elements are always combined in fixed proportions. It can be broken down into simpler, pure substances ( other compounds, elements or both) by chemical change.