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ANAND CLASSES 9463138669
Chemistry
A
A
ANAND CLASSES 9463138669
BASIC CONCEPTS OF CHEMISTRY–1
ANAND CLASSES 9463138669
Session Opener
ANAND CLASSES 9463138669
ANAND CLASSES 9463138669
Session Objectives
ANAND CLASSES 9463138669
1. Branches of chemistry
2. Importance of chemistry
3. Units
4. Significant figures
5. Calculation involving significant figures
6. Dimensions
7. Matter
Session Objectives
ANAND CLASSES 9463138669
ANAND CLASSES 9463138669
What is Chemistry ?
Composition
Chemistry
Structure
Properties
ANAND CLASSES 9463138669
ANAND CLASSES 9463138669
Branches of chemistry
I. Physical chemistry
II. Organic chemistry
III. Inorganic chemistry
IV. Analytical chemistry
V. Industrial chemistry
VI. Bio chemistry
VII. Nuclear chemistry
VIII.Agricultural chemistry
IX. Geo chemistry
ANAND CLASSES 9463138669
Uses of chemistry
ANAND CLASSES 9463138669
ANAND CLASSES 9463138669
Abuses of chemistry
ANAND CLASSES 9463138669
Standards and Units
Physical quantities : expressed in
terms of fundamental quantities.
Fundamental quantities : defined by
measurements and expressed by
standards.
Measurements : comparison with a
standard.
Standards are defined and universally
accepted by competent authority.
ANAND CLASSES 9463138669
ANAND CLASSES 9463138669
Unit
Any standard measure used to
express a physical quantity is a unit
Invariable with physical conditions
Convenient size (not too large or too small)
Universally followed
Easily reproducible
ANAND CLASSES 9463138669
ANAND CLASSES 9463138669
Fundamental and derived units
Units used to express the fundamental
quantities which are not expressed in
any other form
e.g., mass, length, time etc
Units which are expressed in terms of the
fundamental units
e.g., area, volume,speed etc
Fundamental units
Derived units
ANAND CLASSES 9463138669
Physical
quantity
Relation with other basic
quantities
SI units
Area Length square m2
Volume Length cube m3
Density Mass per unit volume kg m–3
Speed Distance travelled per unit time m s–1
Acceleration Speed change per unit time m s–2
Derived units
ANAND CLASSES 9463138669
Physical
quantity
Relation with other basic
quantities
SI units
Force Product of mass and acceleration Kg m s–2
(= Newton, N)
Pressure Force per unit area Kg m -1 s–2
(= Pascal, Pa)
Energy Product of force and distance
traveled
Kg m2 s–2
(= Joule, J)
Mass of sample
Density
Volume of sample
 –3
3
1Kg
1Kgm (SI units)
1 m
 
ANAND CLASSES 9463138669
Fundamental units of
metric systems:
Metric system
Mass Gram
Length Meter
Volume Litre
1 kilometer = 103 meters
These units are related by power of ten (10).

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ANAND CLASSES-Best JEE Coaching Jalandhar|9463138669|Coaching Center for JEE in Jalandhar

  • 2. ANAND CLASSES 9463138669 BASIC CONCEPTS OF CHEMISTRY–1
  • 4. ANAND CLASSES 9463138669 ANAND CLASSES 9463138669 Session Objectives
  • 5. ANAND CLASSES 9463138669 1. Branches of chemistry 2. Importance of chemistry 3. Units 4. Significant figures 5. Calculation involving significant figures 6. Dimensions 7. Matter Session Objectives
  • 6. ANAND CLASSES 9463138669 ANAND CLASSES 9463138669 What is Chemistry ? Composition Chemistry Structure Properties
  • 7. ANAND CLASSES 9463138669 ANAND CLASSES 9463138669 Branches of chemistry I. Physical chemistry II. Organic chemistry III. Inorganic chemistry IV. Analytical chemistry V. Industrial chemistry VI. Bio chemistry VII. Nuclear chemistry VIII.Agricultural chemistry IX. Geo chemistry
  • 9. ANAND CLASSES 9463138669 ANAND CLASSES 9463138669 Abuses of chemistry
  • 10. ANAND CLASSES 9463138669 Standards and Units Physical quantities : expressed in terms of fundamental quantities. Fundamental quantities : defined by measurements and expressed by standards. Measurements : comparison with a standard. Standards are defined and universally accepted by competent authority.
  • 11. ANAND CLASSES 9463138669 ANAND CLASSES 9463138669 Unit Any standard measure used to express a physical quantity is a unit Invariable with physical conditions Convenient size (not too large or too small) Universally followed Easily reproducible
  • 12. ANAND CLASSES 9463138669 ANAND CLASSES 9463138669 Fundamental and derived units Units used to express the fundamental quantities which are not expressed in any other form e.g., mass, length, time etc Units which are expressed in terms of the fundamental units e.g., area, volume,speed etc Fundamental units Derived units
  • 13. ANAND CLASSES 9463138669 Physical quantity Relation with other basic quantities SI units Area Length square m2 Volume Length cube m3 Density Mass per unit volume kg m–3 Speed Distance travelled per unit time m s–1 Acceleration Speed change per unit time m s–2 Derived units
  • 14. ANAND CLASSES 9463138669 Physical quantity Relation with other basic quantities SI units Force Product of mass and acceleration Kg m s–2 (= Newton, N) Pressure Force per unit area Kg m -1 s–2 (= Pascal, Pa) Energy Product of force and distance traveled Kg m2 s–2 (= Joule, J) Mass of sample Density Volume of sample  –3 3 1Kg 1Kgm (SI units) 1 m  
  • 15. ANAND CLASSES 9463138669 Fundamental units of metric systems: Metric system Mass Gram Length Meter Volume Litre 1 kilometer = 103 meters These units are related by power of ten (10).