chemistry in everything find the chemistry!. what does matter look like?
TRANSCRIPT
Chemistry in EverythingFind the chemistry!
What does matter look like?
Properties of Matter2 types of properties that describe matter:
ExtensiveIntensive
Let’s look at the root of each word.
Extensive Property:Property that depends on the amount of
matter in a sample
VolumeMass
Intensive Property:Property that depends on the type of matter
in a sample, NOT the amount
TemperatureDensity
Identifying SubstancesSubstance – matter that has the same
uniform and definite composition
Are both of these composed of the same substance?
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
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
Signs of a Chemical ChangeTransfer of energyChange in colorProduction of gasFormation of a
precipitateSolid that forms
from 2 liquids
What is a mixture?•A physical blend of
two or more components/substan
ces.
Is air a mixture?
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
The Kool-Aid manIs he a homogeneous or heterogeneous mixture?
How many phases does he have?
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
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?
What happens to the properties of elements when they are combined?
http://www.can-do.com/uci/lessons98/I-periodic-color.gif
Substances vs. Mixtures
http://image.wistatutor.com/content/matter-around-pure/classification-of-matter.jpeg
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?