Classification of Matter
an overview of types and relationships
Matter Unit: Classification of MatterElements, Compounds and Mixtures
The Nature of Matter
•What is Matter?Anything that has Mass and has Volume
(takes up space).
•Matter is classified into Pure Substances
and Mixtures
Pure substances are made of 1 kind of “stuff”
Pure Substances are divided into Elements and Compounds
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Elements
Matter made of just one kind of atom
Cannot be broken down into a simpler substance
Each element has unique set of properties
Smallest part of an element is an atom
Compounds
Matter made of two or more elements combined chemically
Properties of compound are different than those of the elements making it
up
Smallest part of a compound is a molecule
Mixtures- two or more pure substances
combined physically
• Mixtures are divided into 2 types: Homogenous and
Heterogeneous
Homogenous Mixtures
• Homogenous mixture have two or more substances evenly distributed
throughout the sample.
• Every sample of the mixture will be the same.
• Example of an homogenous mixture- Hot Tea with lemon& honey, oatmeal
Heterogeneous Mixtures
• Heterogeneous mixtures are two or more substances combined in a
random way.
• Every sample of the heterogeneous mixture is going to be different.
• Example of a heterogeneous mixture-Froot Loops cereal, trail mix
Suspensions, Solutions and Colloids
Suspensions
• a Heterogeneous mixture in which the parts will separate and settle
out.
• Ex Vegetable Soup, Muddy Water
Solutions and Colloids
• a Homogenous mixture in which the parts will stay mixed together
• The parts of a solution or colloid WILL NOT settle out
• Ex Whipped Cream, Coffee
How Matter Shakes Out
Matter
Mixtures
Pure
substance
Elements &
Compounds
combined
physically
Homogeneous
Elements
Compounds
Mixed
evenly
Heterogeneous
Solute
Atoms
Mixed
Randomly
molecules
Solvent
Suspensions
settle out
don’t settle
Solutions
& Colloids