Download Classification of Matter

Classification of
Matter
Investigative Science
Lab book pages 71-73
Cornell Notes Format
Mrs. Glassmeyer
Review - Properties of Matter
Physical Properties – Characteristics
of a substance that do not change
the chemical makeup of the
substance.
Chemical Properties - Characteristics of
a substance that do change the chemical
makeup of the substance. How a
material reacts or fails to react in the
presence of another material to form a
new material.
Physical Properties of Matter
State of Matter
Melting Point
Boiling Point
Density
Conductivity
Uniformity
Texture
Strength
Bounce
Malleability
Ductility
Luster
Elasticity
Bounce
Odor
Taste
Physical and Chemical Changes
Physical Changes

Do not alter the identity of a substance
Crushing, tearing, changes of state (solid to
liquid to gas)
Chemical Changes

Alter the identity or chemistry of a
substance
Burning, cooking, rusting
What is the classification of
matter flow chart?
Matter
Pure Substance
Element
Compound
Mixture
Heterogeneous
Homogeneous
Classification of Matter
What are elements?
Matter that can not be broken down into
simpler substances under normal lab
conditions
Contains only one kind of element
Atom
Molecule
Elements (symbols) Na, Au, C
Where can you find a list of all the
elements?
The periodic table
What are compounds?
Can be separated into elements CHEMICALLY
+
Composed of two or more elements that combine in
a chemical reaction
+
Combine in a fixed proportion (Law of Definite
Proportions)
Examples – NaCl, H2O, CO2
What are the differences between
elements & compounds?
Compounds contain more than one
element.
Compounds always have the same
composition, regardless of source (law
of constant composition; law of definite
proportions).
Let’s Practice
Were you right?
Oxygen (a) is an element and all the
others are compounds.
What are mixtures?
A blend of two or more pure
substances
Not chemically combined
Granite
What types of mixtures are
there?
Heterogeneous Mixtures
Mixture with visibly different parts.



Sand + water
Salt + Pepper
M & M’s
Homogeneous Mixtures
Mixture with no visibly different parts.


Sea water H2O + NaCl
Air
N2 + O2 + CO2
Let’s Practice
mixtures
pure substances
elements
compounds
Draw a picture that represents a pure
compound.
Let’s Practice Classifying Matter
Make a list of 3 things (and their parts)
found in the classroom. Classify these
as




solid, liquid, or gas
pure substances and mixtures
homogeneous or heterogeneous
elements or compounds
Be prepared to share your
classifications.