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Classification of matter, Properties of substance, Changing state of…
Classification
of matter
Physical properties
-can be measured and observed without changing a Chemical composition
Physical change
-no new substances
-need small energy
-easy to changes back
Classify matter according to states
Of matter
Solid
Liquid
Gas
Classify matter according to
combination of particle
Element
-made of particle/atom
Compound
-made of 2 or more different element
Mixture
-made of 2 or more elements / compound
Solution
-less than 1 nm
Colloid
-1nm-1,000nm
Suspension
1,000nm
Classify matter according
to texture
Homogenous
Solution
Heterogeneous
Suspension
Classify matter according
to purity
Pure
Element
Compound
Impure
Mixture
Properties of substance
Strength
The ability to carry load without breaking
Example
-steel,concrete
Density
The mass of subtance per unit volume
Example
-steel, gold
Hardness
Harder material can scratches a softer material
Example- diamond
Flexibility
The ability to bend without breaking
Example
-rubber
Electrical
The ability to transfer electricity
Example
-metal
Thermal conductivity
The ability to transfer heat
Example
-metal
Melting point
The temperature of changing from solid to liquid
Boiling point
The temperature of changing from liquid to gas
Changing state of matter
Gas
<--Boil
<--Evaporate
Condensation->
Liquid
Melt-->
<--Freeze
Solid
<--Sublimate
Solidification-->
Deposition--->
1 more item...
State of matter
Solid
Shape-fixed shape
Distance-very close to other
Movement-vibration
Energy-low enerygy
Liquid
Shape - take shape of container
Distances - close together
Movement - Can move
Enerygy-medium
Gas
Shape-No fixed shape
Distance-very far apart
Movement-move very free
Energy-high
Chemical Properties
-Create a new subtances
Chemical changes
-A new substances is formed
-Difficult to changes back
-Alway taken enerygy
Matter
Mass
The amount of matter in a substance
Volume
The amount of space