The document discusses the periodic table of elements, including that it classifies elements regularly, uses symbols to represent each element, and can be used to find details about elements like their state of matter. It notes some common gaseous and liquid elements and identifies Dmitri Mendeleev as the father of the modern periodic table.

3.  What indicated by the picture?
 The letters indicate what?
 How many elements are in total?
 Which are the elements familiar to
you?

5.  Elements in liquid state – Mercury,
Bromine, Ceasium,
Francium,Gallium
 Elements in gaseous state –
Hydrogen,Oxygen,Chlorine,Nitrog
en,Argon,Fluorine,Helium,Kripton,
Xenon

7. The father of modern periodic
table

8.  Identify the table in which
elements are classified regularly?
 What is the importance of
symbols in periodic table?
 Find out the details of elements
using periodic table?