Earth's elements

Why is it wrong to use the term " pure air "?

Salt can be extracted from sea water by _______

Explain Why liquid gold can flow while solid gold cannot ?

metals can be molded into different shapes by ______

What happens in all physical reactions ?

How much nitrogen is present in air ____%

What is number of latest element in periodic table ?

Write a difference between element and compound

What do we mean by properties of an element ?