basic chemistry 1

Welcome

KAVIYATTU COLLEGE OF EDUCATION

PIRAPPANCODE

POWER POINT

Presented by,

Beettu B.L

Physical Science

Reg no: 13368004

BASIC CHEMISTRY

Matter - Solid, Liquids, Gas

Elements – Atoms & Particles

Molecules & Compounds

Chemistry

Matter

Matter = any material substance with Mass & Volume

States of Matter- 3 StateSolid

Liquid Gas

Solid

Definite Shape

Definite Volume

Liquid

Indefinite Shape – takes the shape of the container

Definite Volume

Gas

Indefinite Shape – takes the shape of the container

Indefinite Volume – can expand and be compressed

Elements & Examples

One of the 100+ pure substances that make up everything in the universe C = Carbon Na = Sodium

O = Oxygen Ca = Calcium

H = Hydrogen K = Potassium

N = Nitrogen I = Iodine

S = Sulfur Cl = Chlorine

Atom

The smallest particle making up elements

Sub-Atomic Particles

Protons p+ - positive

charge, in nucleus

Electrons - e- negative charge, orbiting

around nucleus

Neutrons n0 – no

charge, in nucleus

Drawing an Atom of Carbon

Nucleus:Electrons

6

C12.011

Atomic no:= no: of p+ or no: of e-

Carbon has 6 p+ and 6 e-

Atomic Mass – Atomic no: = no: of n0

Carbon has 6 n0

Molecules

Glucose Sugar

C6H12O6

Chemical formula

C

H

OH

C C

C

C CH

HH

H

H

HOH

O

OH

HOOH

Structural formula

Compounds

Compounds - 2 or more elements chemically

combined to form a new substance with

new properties

Properties – The way a chemical substance looks and

behaves

Compounds

Compounds are made of 2 or more different atoms

combined to form Molecules

H + O H2O

H

O

H

Chemical formula lists the number of different atoms

in a single molecule

Structural formula shows the arrangement of the

atoms in a single molecule

Examples of Organic Compounds

C, H + O Carbohydrates – Sugars, Starch & Cellulose

C, H + O Lipids – Fats & Oils

C, H, O, N, & sometimes P + S

Proteins

C, H, O, N, + P Nucleic Acids – DNA & RNA

Diga, diga, diga, diga, that’s all folks!

Thank you…