cornell notes: make sure that you have the guided notes sheet from up front, which you will attach...

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