September 9, 2009Obj – Differentiate between various forms of

matter.Warm-Up – What is matter?Reminders –HW – Elements, Compounds & MixturesGraphing Quiz today!

What is Matter?

MatterChemistry is the study of matter and how it

changesMatter is anything that has mass and

occupies space

Classifying MatterOrganize the items on your desk into groups

based on what you know about them.

September 11, 2009Obj – Understand Matter

Warm-Up – Differentiate between a pure substance and a mixture.

Reminders – Matter Quiz on Monday

Classifying Matter – Concept MapPrepare a concept map showing the

relationships among the following terms and the items in front of you.

Include these terms in your concept maps:Compound, Element, Heterogeneous, Matter,

Mixture, Homogenous, Pure substance, Solution

Pure SubstancesPure Substances: matter with a fixed definite

composition with exact definite properties. (example: distilled water)ElementsCompounds

Pure Substances: ElementsElements -

substances that cannot be broken down into simpler substances (pure)

Atoms – smallest unit of an element that still retains its properties.

Pure Substance: CompoundsCompounds -

made of atoms of more than one element that have bonded together chemically (Example: Salt)

Molecules are the smallest unit of a compound

MixturesThe properties of a mixture can vary because the composition of a mixture is not fixed.• Mixtures can retain some of the properties of their individual substances.

• The properties of a mixture are less constant than the properties of a substance.

Heterogeneous and Homogeneous MixturesHomogeneous mixture = a mixture that

contains more than one type of matter and is the same throughout.

Heterogeneous mixture = a mixture that contains more than one type of matter and is not the same throughout

September 14, 2009Obj – Explore separating matter

Warm-Up – What types of matter can be separated and why? What types of matter cannot be separated?

Reminders – Quiz today, CE due Friday

Solutions, Suspensions and ColloidsBased on the size of its largest particles, a

mixture can be classified as a solution, a suspension, or a colloid.

Solution: when substances dissolve and form a homogeneous mixture, the mixture that forms is a solution. Sugar in water

Suspension – a heterogeneous mixture that separates into layers over time. Ex. Sand and water

Colloid – a combination of small particles that do not separate as in a solution and larger particles that do separate as in a suspension. Ex. Milk, it will separate over time.

Concept Map

Separating MixturesFiltration – separates mixtures on the

basis of particle size.Ex. Using a coffee filter to separate the

ground coffee from the water when making a cup of coffee.

Distillation – separates a mixture in a solution by boiling points.

Ex. Evaporating the water from salt water separates the salt from the water leaving the salt behind.