What are Elements
Elements are the basic form of matter .
They cannot be broken down into simpler substances by chemical reactions
Examples of Elements:
- Iron (Fe)
- Copper (Cu)
- Oxygen (O)
- Carbon (C)
- Silicon (Si)
- Boron (B)
Different Types of Elements
All the elements can be categorized into Metals, Nonmetals and Metalloids as shown below
Iron → Metals
Copper
Oxygen → Nonmetals
Carbon
Silicon → Metalloids
Boron
Are Elements Natural or Manmade?
Total number of elements are more than 100
Out of this, 92 are natural
Example - Carbon, Hydrogen, Oxygen
Rest are man-made
Example - Americium, Curium, Californium
Are these Elements Solids, Liquid or Gases?
Majority of them are Solid
Example - Iron, Copper
Eleven are found in Gaseous State
They are - Hydrogen ( H ) ,Nitrogen ( N ), Oxygen ( O ), Fluorine ( F ), Chlorine ( Cl ), Helium ( He ), Neon ( Ne ), Argon ( Ar ), Krypton ( Kr ), Xenon ( Xe ), Radon ( Rn )
2 are found in Liquid State
They are - Mercury, bromine
Note - Elements like Gallium, Cesium become liquid at slightly above room temperature - 303K or 30 O C
