Identifytabulateelements compounds-mixtures

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Classifying Matter: Elements, Compounds, and Mixtures

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Transcript of Identifytabulateelements compounds-mixtures

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Classifying Matter:Elements, Compounds, and

Mixtures

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Pure Substances

A sample of matter that has definite chemical and physical properties.

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ElementsRemember:Elements are pure substance that cannot be separated into simpler substance by physical or chemical means. We classify elements into the Periodic table:

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Compounds

Pure substance composed of two or more different elements joined by chemical bonds.

Made of elements in a specific ratio that is always the sameHas a chemical formulaCan only be separated by chemical means, not physically

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Mixtures

A combination of two or more pure substances that are not chemically combined.

substances held together by physical forces, not chemical

No chemical change takes place Each item retains its properties

in the mixture They can be separated physically

Chem4kids.com

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Mixtures vs. Compounds

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Can you identify the following?Construct a table in your book with 3 columns, with the

headings element, compound, and mixture. You will be shown a series of photos. Can you tell which of the three headings each photo represents? Write the answers into your table.

Review:An element contains just one type of atom. A compound contains two or more different atoms

joined together. A mixture contains two or more different substances

that are only physically joined together, not chemically.A mixture can contain both elements and compounds.

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Element, Compound, or Mixture?

Rocks

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Element, Compound, or Mixture?

Rocks

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Element, Compound, or Mixture?

Copper

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Element, Compound, or Mixture?

Copper

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Element, Compound, or Mixture?

Jelly Beans

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Element, Compound, or Mixture?

Jelly Beans

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Element, Compound, or Mixture?

Table Sugar

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Element, Compound, or Mixture?

Table Sugar

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Element, Compound, or Mixture?

Diamond

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Element, Compound, or Mixture?

Diamond

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Element, Compound, or Mixture?

Tea

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Element, Compound, or Mixture?

Tea

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Element, Compound, or Mixture?

Salt

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Element, Compound, or Mixture?

Salt

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Element, Compound, or Mixture?

Neon Gas

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Element, Compound, or Mixture?

Neon Gas

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Element, Compound, or Mixture?

Salad

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Element, Compound, or Mixture?

Salad

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Element, Compound, or Mixture?

Pure Water

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Element, Compound, or Mixture?

Pure Water

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Element, Compound, or Mixture?

Aluminum

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Element, Compound, or Mixture?

Aluminum

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Element, Compound, or Mixture?

Lemonade

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Element, Compound, or Mixture?

Lemonade

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Element, Compound, or Mixture?

Silver

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Element, Compound, or Mixture?

Silver

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Element, Compound, or Mixture?

Sand

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Element, Compound, or Mixture?

Sand

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NotesDetailed notes are located at:http://www.middleschoolscience.com/elements-compounds-mixtures-notes-isn.pdf

Flow Chart:http://www.middleschoolscience.com/matter-flow-chart-isn.pdf