Classification of Matter

A Self Guided Lesson

c. Michener

Types of Matter

Heterogeneous MixturesHomogeneous Mixtures

CompoundsElements

Resources

Summary and Practice http://www.fordhamprep.org/gcurran/sho/sh

o/lessons/lesson14.htm

Review and Practice http://teacherbridge.cs.vt.edu/public/bhs/tea

chers/Dana/Matter.html

Alternative Classification Scheme http://nobel.scas.bcit.ca/chem0010/unit2/2.

4_classMatter_scheme.htm

Heterogeneous Mixtures

Type of matter consisting of at least two parts physically combined Visible parts (phases) Varying composition Impure Physically separable

Heterogeneous Mixture Examples

Dirt Heterogeneous mixtures have more than one visible phase

Concrete Car

How to Decide

D o yo u se e o n ly 1 pa rt?

HETEROGENEOUS MIXTUR EH a ve a t le a s t 2 v isib le p a rts

P h ys ica lly com b in ed

H om ogeneous M a tterH a ve o n ly 1 v is ib le p a rt

P h ys ica lly o r ch em ica lly co m b in ed

A ll M a tterH a s m a ss

T a ke s up sp a ce

Do you see only one part? (YES/NO)

NO YES

Heterogeneous Mixtures

Homogeneous Mixtures

Compounds

Elements

Homogeneous Mixtures

Matter that is uniform throughoutReferred to as a Solution 1 visible part (uniform

distribution) Constant composition

throughout Even distribution of

particles

Solution (Homogeneous Mixture) Examples

Salt water Brass (A solution of metals=alloy)

Glass Solutions appear to be one part, but are actually just mixed very well

How to Decide

Is the matter pure? (YES/NO)

NO YES

Heterogeneous Mixtures

Homogeneous Mixtures

Compounds

Elements

Homogeneous MatterHas 1 visible part

May be physically or chemically combined

SOLUTION(Homogeneous Mixture)

Has at least 2 partsCan be physically separated

SubstanceHas only 1 part

Can not be separated physically

Is the matter pure?

Compounds

Homogeneous matter that is made of more than one type of atom Constant

composition Fixed ratio Pure 2 or more different

elements in formula

SUGAR

Pure water

Compound Examples

Table Salt (NaCl) Compounds are pure matter that consists of two or more different elements chemically combined

Carbon Dioxide (CO2) Silver Nitrate (AgNO3)

How to Decide

Is the re o n ly 1 type o f e le m e n t?

COMPOUNDC o n sis ts o f 2 o r m o re d iffe re n t e le m e n ts

C a n o n ly b e sep a ra te d ch e m ica lly

ELEM EN TC o n sis ts o f on ly 1 type o f e le m e nt

C a n o n ly b e se p ara ted b y n uc le ar p roce ss

SubstanceH a s on ly 1 p a rt

C a n n o t be sep a ra te d p h ysica lly

Is there only 1 type of element? (YES/NO)

NO YES

Heterogeneous Mixtures

Homogeneous Mixtures

Compounds

Elements

Elements

Homogeneous matter that consists of only 1 type of atom Constant

composition

Pure Only 1 element

type in formula

Element Examples

Carbon Oxygen

Elements are pure matter consisting of only one type of atom

Uranium

How to Decide

Is the re o n ly 1 type o f e le m e n t?

COMPOUNDC o n sis ts o f 2 o r m o re d iffe re n t e le m e n ts

C a n o n ly b e sep a ra te d ch e m ica lly

E L E M E N TC o n sis ts o f on ly 1 type o f e le m e nt

C a n o n ly b e se p ara ted b y n uc le ar p roce ss

S u bsta nceH a s on ly 1 p a rt

C a n n o t be sep a ra te d p h ysica lly

NO YES

Is there only 1 type of element? (YES/NO)

Heterogeneous Mixtures

Homogeneous Mixtures

Compounds

Elements

The BigPicture

(click 3 times)

Is there only 1 type of element?

Is the matter pure?

Do you see only one part?

NO

NO

NO

YES

YES

YES

Heterogeneous Mixtures

Homogeneous Mixtures

Compounds

Elements

Quiz Yourself

Click on the link below. It will take you to a brief assessment based on the content of the presentation.

https://spreadsheets.google.com/viewform?formkey=dGJIZWlZMEtzT3hERjBMN1duUko2ZUE6MQ