类别 全部 - substances - mixture - elements - compound

作者：Audrey lam 11 年以前

366

Element,Compound,Mixture

The material discusses the fundamental differences between elements, compounds, and mixtures. Elements are pure substances that cannot be broken down further and are listed on the periodic table, which includes metals and non-metals.

Element,Compound,Mixture

Element,Compound,Mixture

Mixture

They are not chemically combined
Are not fixed in propertion
Can be seperated by physically means
Made up of 2 or more different substances(Elements and Compound ) that are mixed together
Examples of mixtures
Seawater

Gasoline

Elements

Are pure subtances
Examples of Elements
Hydrogen
Oxygen
Sodium
Chlorine
cannot be broken down into simpler substances
Perodic table
Metals
Non -Metals

Compound

Examples of Compound
Sugar
Salt
Made up of 2 or more different Elements chemically combined
Propertion of Copound is different from the Elements
Cannnot be physically seperated but can be seperated by chemically methods

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