类别 全部 - solution - mixture - compound - suspension

作者:Fraser Zhang 5 年以前

340

SNC

A pure substance comprises a single type of atom and cannot be broken down into simpler substances. Elements such as sodium exemplify this category. Compounds, on the other hand, are pure substances made up of two or more elements chemically combined, like sodium chloride.

SNC

suspention

Mechanical Mixture or heterogeneous mixture

The different substances that make up the mixture are visible.


l.e.ltalian salad dressing.

solution or homogeneous

Suspension ( A special type of Heterogeneous mixture)


One substance is floating throughout another substance,but will eventually settle to the bottom.



Element

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


Made up of only 1 type of atom.


i.e.sodium (NA)

SNC

Mixture

Solution (Homogeneous)


Different substances are mixed so well that the mixture looks the same throughout.


Exist in all 3 states-solid liquid gas


(home = 'same')


l.e.air

Pure substance

Compound


A pure substance that contains 2 or more elements chemically combined.


i.e.sodium chloride (NaCl)

Compound
Water
ok
Methane