Warm-UpIf you have your Syllabus please

turn it in to the basket!!Grab 7 note cards and write the

letters W-E-L-C-O-M-E on themIn what order do the cards have

to be stacked in order to spell WELCOME by placing one card down and one card around (repeating until all cards are down)

Comp book/binder set up

ObjectiveTo be able to differentiate

between pure substances and mixtures.

Introduction to MatterMatter: Any physical substance that

has mass and takes up space. Are you able to see, touch, smell,

taste, or otherwise observe matter?YES!!!

What are the four states of matter?

Define them using your own words!

Think about how the molecules move!

Warm-upIf you have not turned in your syllabus

yet, please fill out a late card (excused or unexcused), staple it to your syllabus, and turn it in to the appropriate class bin.

Take out your comp books and answer the following question.

List the four states of matter and explain the properties of each.

Official DefinitionsSolid- has definite shape and volumeLiquid- has fixed volume, takes on the

shape of the container (flows).Gas- takes on the shape and volume

of it’s container (flows).Plasma- high temperature state where

atoms lose most of their electrons.

Plasma in fluorescent tubes

Describing MatterWith your table partner list four

ways you can describe a piece of matter. How would you describe an object to a blind person?

Chances are all of the suggestions you’ve just given were all physical properties of matter!

Physical Properties of Matter

Physical Properties: Properties that can be directly observed without causing any change to the matter.

Physical PropertiesSize: The length, width, and height

of an object. Measured in meters (m) or centimeters (cm).

Mass: How much “stuff” an object is made of. Measured in grams (g) or kilograms (kg).

Physical PropertiesVolume: How much space an object

takes up. Measured in milliliters (ml) or cubic centimeters (cm3)

Weight: The force of gravity pulling down on the mass of an object. Measured in Newtons (N)

Physical PropertiesColor: Wavelength of

electromagnetic radiation reflected from the surface of the object. Measured in micrometers (μm)

Texture: The appearance and feel of the surface of an object or substance.

Physical PropertiesHardness: The ability of a substance

to resist being scratched.

Shape: The 3-dimensional geometric form of an object.

Odor: Property of matter that is detected by the olfactory system.

Physical PropertiesSolubility: Ability of a substance to

dissolve in a solvent.

State: Solid, liquid, or gas.

Density: Mass per unit of volume. Measured in grams per milliliter (g/ml) or grams per cubic centimeter (g/cm3).

Types of Matter Diagram!

Pure substancesElementsCompounds

MixturesHomogeneous (solutions)Heterogeneous

Pure SubstancesEvery sample has the same

properties.EX: Each pinch of salt tastes

equally salty.Can not be broken down physically.

Types of Pure Substances

COMPOUNDSCAN be broken into

simpler substances by chemical changes.

Always in a definite ratio

Ex: water - H2O, iron(II) sulfate- FeSO4

ELEMENTSCANNOT be

decomposed into simpler substances by chemical changes

On periodic table!Ex: hydrogen,

oxygen

Practice!CompoundElement

Practice!CompoundElement

Practice!CompoundElement

Practice!CompoundElement

Practice!CompoundElement

Practice!CompoundElement

Practice!CompoundElement

Practice!CompoundElement

Draw A molecular model!

You can have several molecules together. As long as they are the same, it is a pure substance.

C

C

C

C

C

CH

H H

H

HH

YES! NO!

MixtureMixture: When two or more pure

substances combine, but they don’t chemically bond

Molecules stay separatedThey can be physically separated

Filtration, evaporation, distillation, magnetism

Ex: Sand, CerealThink of 2 more!

Draw Mixture Models!Molecular models:2 different elements:

2 different compounds:

A compound and an element:   

C

C

C

C

C

CH

H H

H

HH

He

Xe

Xe

XeXe

Xe

Xe

Xe

He

He

He

He

He

He

He

He

He

He

He He

HeHe

He

He

He

S

SS

S

S

SSS

C C

Xe

Types of MixturesHomogeneous

look the same throughout but can be separated by physical means (like filtering)

Ex: milk, yogurt, Gatorade

Heterogeneouscomposed of large

pieces that are easily separated by physical means.

Ex: fruit salad, vegetable soup, salsa, etc.

Homogeneous MixturesHomogeneous mixtures often come

in the form of solutions containing two parts.

Solvents: A liquid used to dissolve some substance.

Solutes: The substance that is dissolved in the liquid.

AlloysMixture of two or more metals… have

different properties than either of the metals.

Brass- Copper and ZincBronze- Copper, tin, aluminumSterling Silver- Silver and Copper

Practice!HomogeneousHeterogeneous

Practice!HomogeneousHeterogeneous

Practice!HomogeneousHeterogeneous

Practice!HomogeneousHeterogeneous

Practice!HomogeneousHeterogeneous

Practice!HomogeneousHeterogeneous

Practice!HomogeneousHeterogeneous

Practice!HomogeneousHeterogeneous

Lab!You will be working with a partner on

a lab to practice identifying pure substances and mixtures.

Make sure your area is tidy before you do the post lab questions.

Safety is VERY important, do not eat any of the materials.

Turn it in once you have completed each section and checked your work.