Date post: | 19-Jan-2015 |
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Technology |
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Matter
Classification of MatterMatter Flowchart
Pure Substances
Mixtures
Matter Flowchart
MATTER
Can it be physically separated?
Homogeneous Mixture
(solution)
Heterogeneos Mixture Compound Element
MIXTURE PURE SUBSTANCE
yes no
Is the composition uniform?
yes Can it be chemically decomposed?
YesNo No
Matter Flowchart
Examples:
Graphite
Pepper
Sugar (sucrose)
Paint
Soda
Element
Hetero. mixture
Compound
Hetero. mixture
Solution
Pure Substance
A Pure substance is one which is made up of only one kind of particles
All Elements and Compounds are Pure substance
EX: Oxygen, nitrogen, iodine, iron,
silicon, silver, gold, etc.
Pure Substances
Element Composed of identical atoms Only one kind of atoms EX: copper wire, aluminum foil
Pure Substances
Compound
Composed of 2 or more elements in a fixed ratio
Properties differ from those of individual elements
EX: table salt (NaCl)
Pure Substances
Law of Definite Composition
A given compound always contains the same, fixed ratio of elements.
Law of Multiple Proportions
Elements can combine in different ratios to form different compounds.
Pure Substances
For example…
Two different compounds, each has a definite composition.
Mixture
A Mixture contains two or more different kinds of particles (pure)
All mixtures Are Impure
Mixtures
Variable combination of 2 or more pure substances.
Heterogeneous Homogeneous
Mixtures
Homogeneous/Solution Uniform throughout Very small particles No Tyndall effect Tyndall Effect
Particles don’t settle EX: rubbing alcohol
Mixtures
Heterogeneous Not uniformed throughout Medium/large-sized
particles Tyndall effect particles may or
may not settle EX: milk, Blood
C. Mixtures
Examples:
Muddy water
Saltwater
Salad Dressing
Blood
Water + Milk
Heterogeneous
Homogeneous
Heterogeneous
Heterogeneous
Homogenous