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2i need give some information about lesson
first of all we must restrict your phone during the lesson even you can lend it to reception after the lesson you can take it of course
3 after this lesson i mean next lesson first ten minute im going to ask you some question about our previous lesson then we going to learn new lesson and last 10 minute we should make quick rewiew about new topic
4ok x student iam iterested have you ever heard something about chemisstry
chemistry is the scientific study of the properties and behavior of matter.[1] It is a physical science under natural sciences
Finding substances in our everyday life that relate to ?
PARTICLE everything you see around you made up from particle but they are so tiny even you cant see them with your eyes if you want investigate them you need microscope
all substances around you made up from pricle even you
what is the matter
PARTICLE THEORY
3 STATES OF MATTER
SOLID PARTICLE CLOSELY PACKED TO EACH OTHER THEY HAVE DEFINITE SHAPE DEFINITE VOLUME THEIR PARTICLE NOT MOVE AROUND STRONG ATTRACTION FORCE THEY ARE RIGID YOU MUST SPEND EXTRA EFFORT TO BREAK THEM
LIQUID THEIR PARTICLE ALSO CLOSELY PACKED BUT NOT AS MUCH AS SOLID THAT IS WHY THEY DONT HAVE DEFINITE SHAPE BUT THEY HAVE FIX VOLUME THEY ARENT ATRRACT EACH OTHER TOO MUCH BUT THEY HAVE SMALL DISTANCE BETWEEN PARTICLE
GAS THEY DONT HAVE DEFINITE SHAPE DEFINITE VOLUME THEIR PARTICLE TOO MESSY AND THHEY DOT HAVE ANY FORCE OF ATTRACTION BETWEEEN THEM THEY CAN EASILY MOVE AROUND AIR IS GAS YOU CANT SEE THEM WITH YOUR EYES
COMPRESS YOU CAN ONLY PRESS GAS STATE BECAUSE THEIR OARTICLE FAR AWAY FROM EACH OTHER YOU DONT NEED AND YOU CANT COMPRESS SOLID AND LIQUID
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