5 composition of matter
Post on 19-May-2015
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Composition of Composition of MatterMatter
• All matter is made up of atoms.
• Elements- when all the atoms in the matter are the same.
• There are 118 elements.
• Ex: Carbon and Oxygen
CompoundsCompounds
• Compounds- matter that is made up of 2 or more combined elements.
• Compounds look different than the elements that make them up.
Compound Ex:Compound Ex:
• Ex: H & O = H2O
C & O = CO2
C,H & O = C6H12O6
SubstanceSubstance
• Substance- matter that is either an element or a compound.
MixtureMixture
• Mixture- material that is made up of 2 or more substances that can be separated physically.
2 Types of Mixtures2 Types of Mixtures
• Heterogeneous
• Homogeneous
Heterogeneous MixturesHeterogeneous Mixtures
• Heterogeneous Mixture- mixture that is unevenly mixed.
• You can see the stuff in the mixture.
Heterogeneous Mixture Ex:Heterogeneous Mixture Ex:
Homogeneous MixtureHomogeneous Mixture
• Homogeneous Mixture- mixture that is evenly (uniformly) mixed.
• Homogeneous Mixtures are also called solutions.
Homogeneous Mixture Ex:Homogeneous Mixture Ex:
Matter
Substance Mixture
Element Compound Homogeneous Heterogeneous
ColloidColloid
• Colloid- a heterogeneous mixture that never settles.
• Ex: milk or fog
SuspensionSuspension
• Suspension- heterogeneous mixture that contains a liquid where visible particles settle.
Suspension ExamplesSuspension Examples
Tyndall EffectTyndall Effect
• Tyndall Effect- the scattering of light by particles in a mixture.
Tyndall Effect Ex:Tyndall Effect Ex:
What do you have?What do you have?
Solution Colloid Suspension
Does it settle?
NO NO YES
Can it be filtered?
NO NO YES
Does it scatter light?
NO YES YES
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