Chemistry in Everything Find the chemistry!. What does matter look like?
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Transcript of Chemistry in Everything Find the chemistry!. What does matter look like?
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Chemistry in EverythingFind the chemistry!
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What does matter look like?
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Properties of Matter2 types of properties that describe matter:
ExtensiveIntensive
Let’s look at the root of each word.
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Extensive Property:Property that depends on the amount of
matter in a sample
VolumeMass
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Intensive Property:Property that depends on the type of matter
in a sample, NOT the amount
TemperatureDensity
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Identifying SubstancesSubstance – matter that has the same
uniform and definite composition
Are both of these composed of the same substance?
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Substances have 2 types of properties…
PhysicalA quality or
condition that can be observed or measured without changing the substances composition
ChemicalThe ability of a
substance to go through a specific chemical change
Can only be observed during a chemical change
Help Chemists identify
substances
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And go through 2 types of changes….Physical
Some properties of a material will change, but the composition of the material does NOT Reversible &
Irreversible
ChemicalA change that
produces matter with a different composition than the original matter Irreversible Chemical reaction
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Signs of a Chemical ChangeTransfer of energyChange in colorProduction of gasFormation of a
precipitateSolid that forms
from 2 liquids
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What is a mixture?•A physical blend of
two or more components/substan
ces.
Is air a mixture?
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Two Types of MixturesHomogeneous Heterogeneous
A mixture in which the composition of matter is uniform throughout.Solution1 phase
A mixture in which the composition is NOT uniform throughout.2 or more phases
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The Kool-Aid manIs he a homogeneous or heterogeneous mixture?
How many phases does he have?
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Separating MixturesFiltration Distillation
The separation of a solid and a liquid in a heterogeneous solution.
Separating the components of a homogeneous liquid solution.Tap water
http://oz.plymouth.edu/~wwf/distillation_files/image001.jpg
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What are substances and mixtures composed of?
ElementsThe simplest form of
matter that has a unique set of properties.
CompoundsA substance that
contains two or more elements chemically combined in a fixed proportion.
Can elements be broken down into smaller substances?
What about compounds?
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What happens to the properties of elements when they are combined?
http://www.can-do.com/uci/lessons98/I-periodic-color.gif
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Substances vs. Mixtures
http://image.wistatutor.com/content/matter-around-pure/classification-of-matter.jpeg
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Law of Conservation of MassIn any physical change or chemical reaction ,
mass is conserved.Mass is neither created nor destroyed.
When an ice cube melts does the liquid have the same mass as the original ice cube?