Matter states & its changesMatter states & its changes
Lesson 2
* The 3 states (kinds) of matter are:
1) Solid state: Iron – copper – wood – sugar – salt.
2) Liquid ,, : water – milk – oil – benzene – kerosene – alcohol.
3) Gaseous ,,: Air – oxygen – nitrogen – CO2 – water vapour.
Matter consists of small building units called Molecules (Particles).
************************************************** ****
Compare between : ( Solid - Liquid & Gases )
Gases
Liquids
Solids
Points
Oxygen –CO2 - air
Water – oil - milk
Iron – Ice - stone
Examples
Indefinite (take the shape of the container)
Indefinite (take the shape of the container)
Definite (fixed)
Shape
Indefinite (take the volume of the container)
definite
definite
Volume
Are very far from each other
Are far from each other
Are very closed
Molecules
N.B
1) Matter exists in one state at room (ordinary) Temp.
2) Solids have definite Shape & Volume.
3) Liquids have definite volume & take the shape of the container.
4) Gases take both (the shape & the volume) of the container.
* The 3 states (kinds) of matter are:
1) Solid state: Iron – copper – wood – sugar – salt.
2) Liquid ,, : water – milk – oil – benzene – kerosene – alcohol.
3) Gaseous ,,: Air – oxygen – nitrogen – CO2 – water vapour.
Matter consists of small building units called Molecules (Particles).
************************************************** ****
Compare between : ( Solid - Liquid & Gases )
Gases
Liquids
Solids
Points
Oxygen –CO2 - air
Water – oil - milk
Iron – Ice - stone
Examples
Indefinite (take the shape of the container)
Indefinite (take the shape of the container)
Definite (fixed)
Shape
Indefinite (take the volume of the container)
definite
definite
Volume
Are very far from each other
Are far from each other
Are very closed
Molecules
N.B
1) Matter exists in one state at room (ordinary) Temp.
2) Solids have definite Shape & Volume.
3) Liquids have definite volume & take the shape of the container.
4) Gases take both (the shape & the volume) of the container.
الجمعة نوفمبر 16, 2012 11:20 pm
