Classification of Matter

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Matter Classification

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Presentation transcript:

Classification of Matter II. Composition of Matter Matter Flowchart Pure Substances Mixtures

Can it be separated by physical means? A. Matter Flowchart See lecture handout. MATTER yes no Can it be separated by physical means? MIXTURE PURE SUBSTANCE Is the composition uniform? no yes Can it be decomposed by chemical means? no yes Homogeneous Mixture (solution) Heterogeneous Mixture Compound Element

B. Pure Substances Element matter composed of identical atoms EX: copper

B. Pure Substances Compound matter composed of 2 or more elements in a fixed ratio properties differ from those of individual elements EX: salt (NaCl)

Use the remaining info to fill in the table on the lecture handout. C. Mixtures Variable combination of 2 or more pure substances. Use the remaining info to fill in the table on the lecture handout. Homogeneous Mixture (Solution) even distribution of components very small particles particles never settle EX: saline solution

C. Mixtures Heterogeneous Mixture uneven distribution of components colloids and suspensions EX: granite

C. Mixtures Colloid medium-sized particles Tyndall effect - particles scatter light (looks cloudy) particles never settle EX: milk

C. Mixtures Suspension large particles particles scatter light particles will settle (needs to be shaken) EX: fresh-squeezed lemonade