FUNDAMENTALS OF CHEMISTRY..

                                                              Since chemistry deals with a wide variety of branches.it should be learned with utmost carefulness....For any subject,studying its basics is the the primary step..Here ,for chemistry,the basics are much simpler to be studied...
                                                                   First we know that chemistry deals with the study of matter,its chemical and physical properties....matter is anything which has mass nd occupies space..There are primarily 3 states of matter;solid,liquid nd gas...these 3 states differ by the energy  poccessed  by its own respective atoms/molecules...
                                                                 scientific notations/exponential notation is a system to show very large or very small figures in a suitable manner for eg:200000000000000000000 can be written in scientific notation as 2*10^20..other method is the use of significant figures as we would deal with so many minute quantities which requires precision and accuracy..in significant figures all,non zero numbers are significant..all zeros preceding non zero number is not significant..all zeros in b/w 2 non zero are significant..zeros after a non zero digit is significant if there is a decimal point after it...nd also u should knw tht counting numbers have infinite significant figures..in addition of significant figures,the result should only contain digits after the decimal point same as the least decimal point position in the adducts.. in multiplication the total no. of significant figures in the product should be equal to the least no of significant figures of the multiplying numbers...