Basic Definitions
Let us discuss some basic definitions to understand chemistry.1.Matter:-
Anything that has mass and occupies space is called matter.
Matter have a very simple mining as you already read that everything that has some mass and occupies some space is known as matter.
Types of matter:-
There are four types of matter
•Solid
•Liquid
•Gas
•Plasma
Har we cheez jiska kuch mass ho or wo jga ghere use hm matter khte hn. Agr simply words me bolen to hmare ird-gird majood hr cheez matter ha. Kun k hmare surrounding me majood hr cheez ka kuch na kuch mass to hota hi ha or he cheez kuch jga b gherti ha.
Matter ki 4 types hn.
•Solid
•Liquid
•Gas
•Plasma
zyada tr solid, liquid, or gas ko hi matter ki types mana jata ha lakin plasma b matter ki hi kism ha jise hm matter k tor pr hi consider kr skte hn.
2.Substance:-
A piece of matter in pure form is called substance.
A matter which is in pure form and do not have any impurities in it is known as substance.
Pure matter jis me kisi kism ki koi milawat na ha use hm substance bolte hn. Matter kbi b zameen se naturally pure form me ni niklta. ise different chemical processes k zriay pure kiya jata ha ta k pure form me isy use kiya ja ske. For Example:- Gold hmesha impure form me niklta ha zameen se lakin phir isy bad me pure kiya jata ha.
3.Mixture:-
A piece of matter in impure form is called mixture.
A piece of matter which have impurities in it is known as mixture.
Mixture is the impure form of matter or jesa k apko pta ha k matter naturally impure form me hi milta ha. zameen se niklne wala matter hmesha apne ander kuch impurities majood rkhta ha jisy k bad me remove kiya jata ha.
4.Physical properties:-
Those properties which depends upon the physical state of the substance are called physical properties.
The properties which are associated with the physical state of the substance are called physical properties. These properties can change with the change of mass. These properties are, such as, boiling point, melting point, mass, density, color, volume etc.
Physical properties matter ki physical state pr depend krti hn. Matter ki physical properties us k mass ko change krne se change ho skti hn or aasi physical properties ko km extensive properties b bolte hn Or aasi properties jo k mass ko change krne se na change hon un ko intensive properties bolte hn.
5.Chemical properties:-
Those properties which depends upon the composition of the substance are called chemical properties.
The properties which are associated with the components of the substance that which elements are present in the compound. These properties are known as chemical properties.
Chemical properties matter ki chemical composition pr depend krti hn. Matter ki chemical properties mass pr depend nhi krti. Iska mtlb ha k mass me kisi kisms ka koi change ane se matter ki chemical properties pr koi fark ni prta.
Written By:- M.Ashir Azeem
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