Chemistry Grade 10 (Science New Course)
Chemistry Grade - 10 (Science ) Unit Topics 14 Classification of Elements 15 Chemical Reaction 16 Some Gases (CO 2, NH 3 ) 17 Metal and Non Metals 18 Hydrocarbon and its Compounds 19 Chemicals used in Daily Life Unit:-14 Classification of elements Periodic table : A table in which elements are classified into various blocks ,periods, and groups on the basis of their similarities and dissimilarities is called periodic table .There are two types lines in the periodic table : i)Group : The vertical columns of periodic table are called groups .The valence electrons of all elements in the same groups are the same . The size of atoms increases from top to the bottom in the group of periodic table . ii)Periods :The horizontal rows of periodic table are called periods .The valence electron