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Classifying Matter:Substances & MixturesMatterWhat is matterAnything that has mass AND takes up space

Solids, Liquids, Gases, and PlasmaWhat is NOT MatterTypes of energy: heat, light, sound, electrical and electromagnetic

Types of forces: gravitational and magnetic

Lesson 1: Substances and MixturesWhat is Matter Made of?All matter is made up of particles called Atoms.

The different ways atoms combine with each other help us identify different types of matter.

Matter is organized into 2 main groups:Pure Substances Mixtures

Pure SubstancesMatter with a composition that is always the same is a pure substance.

Pure substances can be:ElementsCompounds

Elements

CompoundsElementsPure substance composed of a single type of atom.

Elements cannot be separated into simpler substance by physical or chemical means.

CompoundsPure substances composed of two or more different elements joined by chemical bonds. Made of elements in a specific ratio that is always the sameHas a chemical formulaCan only be separated by chemical means, not physically

H2OCO2NaClPractice with types of substances: elements and compoundsExplain which of these are elements and which are compounds:

1. Hydrogen2. Water (H2O)3. Carbon4. Carbon Dioxide (CO2)Practice with elements and compoundsExplain which of these are elements and which are compounds:

1. Hydrogen (H) ELEMENT2. Water (H2O) COMPOUND3. Carbon ( C) ELEMENT4. Carbon Dioxide (CO2) COMPOUNDMoleculesA MOLECULE is two or more atoms that are bonded and act as a unit . . . .

Examples are most compounds like H2O (water) , CO2 (carbon dioxide gas), CH4 (methane gas)

MixturesA combination of two or more pure substances that are not chemically combined.substances held together by physical forces, not chemical No chemical change takes place Each item retains its properties in the mixture They can be separated physically

HOMOGENEOUS MIXTURESA mixture in which 2 or more substances are evenly mixed but not bonded together. (Solution)You cannot see the different parts and therefore seem to be a single substance.Ex: Salt water (liquid)Dry air: Oxygen & Nitrogen (gas)Brass- Zinc & Copper (solid)

HETEROGENEOUS MIXTURESA mixture in which 2 or more substances are not evenly mixed. Suspensions: the particles are much larger than solutions and eventually settle out.Can be stirred or shaken to mixEx: salad dressingbloodsnow globe

HETEROGENEOUS MIXTURESColloids: the particles are smaller than suspension but larger than particles in a solutionParticles do not settle outEx: Clouds ,Whip cream ,Gelatin , Fog & Smoke, Paint ,Ink , Pearls,OpalsColloids can be distinguished from solutions using the Tyndall effect- a beam of light passing through a solution is visible because light is reflected or scattered by the particles in the colloid.

Can you identify the following?You will be shown a series of photos. Tell if each photo represents an item composed of an element, compound, or mixture.Review:An element contains just one type of atom. A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically.A mixture can contain both elements and compounds.

Element, Compound, or Mixture?Rocks

Element, Compound, or Mixture?Rocks

Element, Compound, or Mixture?Copper

Element, Compound, or Mixture?Copper

CuElement, Compound, or Mixture?Jelly Beans

Element, Compound, or Mixture?Jelly Beans

Element, Compound, or Mixture?Table Sugar

Element, Compound, or Mixture?Table Sugar

C12H22O11Element, Compound, or Mixture?Diamond

Element, Compound, or Mixture?Diamond

CElement, Compound, or Mixture?Tea

Element, Compound, or Mixture?Tea

Element, Compound, or Mixture?Salt

Element, Compound, or Mixture?Salt

NaClElement, Compound, or Mixture?Neon Gas

Element, Compound, or Mixture?Neon Gas

NeElement, Compound, or Mixture?Salad

Element, Compound, or Mixture?Salad

Element, Compound, or Mixture?Pure Water

Element, Compound, or Mixture?Pure Water

H2OElement, Compound, or Mixture?Aluminum

Element, Compound, or Mixture?Aluminum

AlElement, Compound, or Mixture?Lemonade

Element, Compound, or Mixture?Lemonade

Element, Compound, or Mixture?Silver

Element, Compound, or Mixture?SilverAgElement, Compound, or Mixture?Sand

Element, Compound, or Mixture?Sand

NotesDetailed notes are located at:http://www.middleschoolscience.com/elements-compounds-mixtures-notes-isn.pdf

Flow Chart:http://www.middleschoolscience.com/matter-flow-chart-isn.pdf