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How Can You Separate the Elements of a Compound

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Mixtures

A mixture is fabricated from different substances that are not chemically joined .

For example, powdered fe and powdered sulfur mixed together brand a mixture of fe and sulfur. They can be separated from each other without a chemical reaction, in the way that different coloured sweets can exist picked out from a mixed packet and put into split up piles.

A mixed pile of sweets is separated into four piles of different colours - red, green, yellow and purple.

There are times when the purity of a substance is very of import. For instance, a medicine must not contain whatever harmful chemicals.

Mixtures and compounds

Mixtures have different properties from compounds . The table summarises these differences.

Mixture Compound
Limerick Variable composition – you can vary the amount of each substance in a mixture Definite composition – y'all cannot vary the amount of each chemical element in a compound
Joined or not The different substances are non chemically joined together The dissimilar elements are chemically joined together
Properties Each substance in the mixture keeps its ain properties The compound has backdrop which are dissimilar from the elements information technology contains
Separation Each substance is easily separated from the mixture It tin can just exist separated into its elements using chemical reactions
Examples Air, seawater, most rocks Water, carbon dioxide, magnesium oxide, sodium chloride

An instance – iron, sulfur and iron sulfide

Atomic number 26 and sulfur react together when they are heated to make a compound called iron sulfide.

Diagram showing iron and sulfur reacting together to make iron sulfide.

Here are some of the differences between a mixture of fe and sulfur, and iron sulfide:

  • the mixture tin can contain more or less fe, but iron sulfide ever contains equal amounts of atomic number 26 and sulfur
  • the iron and sulfur atoms are not joined together in the mixture, only they are joined together in iron sulfide
  • the iron and sulfur even so behave like fe and sulfur in the mixture, but fe sulfide has different properties from both fe and sulfur
  • you can divide the atomic number 26 from the mixture using a magnet, but this does not work for iron sulfide

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Source: https://www.bbc.co.uk/bitesize/guides/zb2f3k7/revision/1

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