Compare and contrast compound and mixture?

Answer 1

MIXTURES

Combination of two or more substances that are not chemically combined

• No new substance formed
• Do not exist in fixed proportions to each other
• They just mix
• Most natural substances are mixtures
• Can be physically separated into pure compounds or elements
• Can be separated by mechanical means
• Physical properties can change
• Any combination of solid, liquid or gas can be a simple mixture

MIXTURES MAY BE HOMOGENEOUS OR HETEROGENEOUS

COMPOUNDS

A pure compound has the same elements and the same amount of elements all of the time

• Elements are chemically combined
• Compound properties are different from the properties of the elements
• They cannot be separated physically
• Physical properties such as boiling point or melting point of pure substances are do not change

a compound will be two elements chemically bonded to each other

a mixture can be two or more different compounds (or elements) in an area (i.e a beaker, the atmosphere)

Answer 2

element is a 'pure' form that contains just the element it's self. They are all listed on the Periodic Table A compound is a substance made up of different elements that are all chemicaly bonded together. (By either ionic or covalent bonds) A mixture is a 'mix' of different compounds or elements that are not bonded together

Answer 3

The components of a mixture can be separated by purely physical means whereas a compound can only broken into its components by chemical means. Physical means can be separation by simply sorting out the components by eye such a sand and popcorn, or by dissolution where components dissolve to different degrees, by distillation where the components have different boiling points. To separate the components of a compound results in the destruction of the compound. Sodium chloride or common salt is a compound. Using chemical means it can be separated into sodium and chlorine. The former is a metal the latter is a gas and they are both entirely different to the white solid sodium chloride. When placed together they can react violently releasing heat and light to reform the original compound sodium chloride. Another compound is water however it can be a component of a mixture. Sea water is a mixture made up of several compounds water being the main component and sodium chloride being the second most important one. However the are many other components all dissolved in the compound water. Thus a mixture can contain two or more compounds. However a compound can never contain mixtures.

Answer 4

what are the two type of pure substances?

element:

compound:

Answer 5

Yes, both are material.