Classification of matter slides
7
8/30/2013 1 Classification of Matter Matter: has mass, occupies space Pure substances • Only 1 substance present • Definite and constant composition • Same properties under same conditions (ex: bp, mp) • Elements or compounds Mixtures • Physical combimation • Varying composition and properties • Homogeneous – 1 phase – Mixed on particle level – not groups • Heterogeneous – 2 or more phases
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Transcript of Classification of matter slides
8/30/2013
1
Classification of Matter
Matter: has mass, occupies space
Pure substances
• Only 1 substance present
• Definite and constant
composition
• Same properties under
same conditions (ex: bp,
mp)
• Elements or compounds
Mixtures
• Physical combimation
• Varying composition and
properties
• Homogeneous – 1 phase
– Mixed on particle level – not
groups
• Heterogeneous – 2 or more
phases
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ExamplesOf elements
Allotropes
C
O
P
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3
Heme – hemoglobin example
CO2 bound to protein chain – doesn’t directly compete with O2
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All living things are heterogeneous
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Molecular
Substances
Dissolve as
Molecules
Molecular
Substances
Are composed
Of non-metals
Ionic substances
Are composed of
Ions
Often a metal + non-metal
Or poly atomic ion
NaCl Na2SO4
Dissolve as individual ions
Electrolytes
Recurrent theme!!!
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Classification of matter
