CH. 2 SEC.1CH. 2 SEC.1

DESCRIBING MATTERDESCRIBING MATTER

GOALGOAL

• STUDENTS- WILL LEARN ABOUT MATTER AND ITS CHEMICAL AND PHYSICAL PROPERTIES.

Matter is everywhereMatter is everywhere

MATTERMATTER

• MATTER- IS ANYTHING THAT HAS MASS AND TAKES UP SPACE.

• KEY – MATTER IS EVERYTHING AROUND YOU: FROM THINGS YOU CAN’T SEE LIKE AIR, TO THE DESK, CHAIR, AND EVEN YOU.

• BUT YOUR FEELINGS, THOUGHTS, ETC ARE NOT MATTER!!!

Can matter be invisible?Can matter be invisible?

• Answer? Why?

SUBSTANCESUBSTANCE

• SUBSTANCE- IS A SINGLE TYPE OF MATTER THAT IS PURE- MEANING IT ALWAYS HAS A SPECIFIC MAKEUP- OR COMPOSITION- AND A SPECIFIC SET OF PROPERTIES.

• EX- SALT, SUGAR• KEY- EVERY FORM OF MATTER HAS TWO

KINDS OF PROPERTIES- PHYSICAL PROPERTIES AND CHEMICAL PROPERTIES

Copy chartCopy chart

PHYSICAL PROPERTIESPHYSICAL PROPERTIES

• PHYSICAL PROPERTIES- IS A CHARACTERISTIC OF A SUBSTANCE THAT CAN BE OBSERVED WITHOUT CHANGING IT INTO ANOTHER SUBSTANCE. EX -DENSITY, HARDNESS, FREEZING AND MELTING POINTS, SGL, COLOR, TEXTURE

CHEMICAL PROPERTIESCHEMICAL PROPERTIES

• CHEMICAL PROPERTY- IS A CHARACTERISTIC OF A SUBSTANCE THAT DESCRIBES IS ABILITY TO CHANGE INTO DIFFERENT SUBSTANCES. WHEN YOU BURN SOMETHING YOU CHANGE ITS CHEMICAL PROP.

• EX- BURNING WOOD, RUSTING IRON

ELEMENTSELEMENTS

• ELEMENT- IS A PURE SUBSTANCE THAT CANNOT BE BROKEN DOWN INTO ANY OTHER SUBSTANCE

• KEY- ELEMENTS ARE THE SIMPLEST SUBSTANCES

• EX - COPPER, GOLD, OXYGEN

YOU ARE MADE OF YOU ARE MADE OF ELEMENTSELEMENTS

PARTICLES OF ELEMENTSPARTICLES OF ELEMENTS

• ATOM- IS THE BASIC PARTICLE FROM WHICH ALL ELEMENTS ARE MADE.

• KEY- ATOMS HAVE THE ABILITY TO COMBINE WITH OTHER ATOMS.

• CHEMICAL BOND- WHEN ATOMS COMBINE AND THE FORCE OF ATTRACTION FORMS A NEW SUBSTANCE

• MOLECULES- GROUPS OF TWO OR MORE ATOMS HELD TOGETHER BY A CHEMICAL BOND. EX-H2O , CO2, …..C12H22O11

Copy the AtomCopy the Atom

MoleculesMolecules

• http://apps.theodoregray.com/molecules

COMPOUNDSCOMPOUNDS

• COMPOUND- A SUBSTANCE MADE OF TWO OR MORE ELEMENTS CHEMICALLY COMBINED IN SET RATIO.

• KEY- WHEN ELEMENTS ARE CHEMICALLY COMBINED THEY FORM COMPOUNDS HAVING PROPERTIES THAT ARE DIFFERENT THAN THE INDIVIDUAL ELEMENTS.

ExamplesExamples

MIXTURESMIXTURES

• MIXTURES- 2 OR MORE SUBSTANCES NOT CHEMICALLY COMBINED.

• EX- SALAD, SOIL• 2 TYPES• HETEROGENEOUS MIXTURE- YOU

CAN SEE THE DIFFERENT PARTS. EX SALAD

• HOMOGENEOUS MIXTURE- CANT SEE THE PARTS. EX- SUGAR WATER

COPY IN NOTESCOPY IN NOTES

EXAMPLESEXAMPLES

SECTION 1 ASSESSMENTSECTION 1 ASSESSMENT

• WRITE THE QUESTION AND ANSWER FROM THE TEXT BOOK P.

• 1-AB

• 2-AB

• 3-AB

BRAINPOPBRAINPOP