cornell notes: make sure that you have the guided notes sheet from up front, which you will attach...
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Cornell Notes: Make sure that you have the Guided Notes sheet from up front, which you will attach into
your notebook.Topic: Pure
Substances & MixturesDate: 10/29/2012
Pure Substances and Mixtures
Today’s Game PlanCatalyst 10
minutesPure Substances and Mixtures
20 minutes
Raise ‘em up!! 10 minutes
Go with the Flow…Chart
5 minutes
Independent Practice/assign homework
Pure SubstancesComposition is the same throughout
and does not vary from sample to sample.
CANNOT be broken down by physical changes
Can be an element or
compound.
ElementDefinition: substances in their simplest formsCannot be broken down by a physical or chemical change
Found on the periodic tableMade up of one type of atom
Examples of Elements:HydrogenCarbonLithiumGold
What are two other examples of elements not listed above? What do all elements have in common?
CompoundDefinition: substance formed by the
chemical combination of two or more elementscan be broken into simpler substances by a chemical change
+ = Compound
A compound is always composed of the same elements in the same proportions.
In other words, Carbon Dioxide (CO2) is always composed of 1 atom of C and 2 atoms of O.
If there are different amounts of carbon or oxygen, it is no longer carbon dioxide.
Law of Definite Proportions
More Examples of Compounds
MixtureDefinition: two or more pure substances (elements or compounds) that are mixed
together but NOT joined chemicallyNOT a pure substanceExamples: The air we breath, gasoline for cars, the sidewalk on which we walk
Homogeneous MixturesUniform in composition and
appearance
Same proportion of components throughout
Consists of two or more substances in the same phase
Also called solutions
Heterogeneous Mixturesvariable appearance and composition
Today’s Game PlanCatalyst 10
minutesPure Substances and Mixtures
15 minutes
Raise ‘em up!! 10 minutes
Go with the Flow…Chart
10 minutes
Independent Practice/assign homework
5 minutes
Raise ‘em Up!Look at the following example and with your partner determine if it is a heterogeneous mixture, homogeneous mixture, element, or compound
Chicken Noodle Soup
Pure Water
Tap Water
Pure Gold
Coca-Cola
Today’s Game PlanCatalyst 10
minutesPure Substances and Mixtures
15 minutes
Raise ‘em up!! 10 minutes
Go with the Flow…Chart
10 minutes
Independent Practice/assign homework
5 minutes
Kool Aid has mass and takes
up space
Can be separated
by allowing water to
evaporate
Same composition throughout
Go with the Flow…ChartWith your partner, look at the example on the board. Fill out the blank matter chart to determine the matter’s classification.
Today’s Game PlanCatalyst 10
minutesPure Substances and Mixtures
15 minutes
Raise ‘em up!! 10 minutes
Go with the Flow…Chart
10 minutes
Independent Practice/assign homework
5 minutes