Chemistry class 11 saj

Day 5 22.5.20 Good Morning Boys, Today You will note down Your Holiday H.w . TASK 1  :  PROJECT TOPIC : ENVIRONMENTAL CHEMISTRY.   POINTS TO BE COVERED INCLUDE  Defination of pollution Sources of pollution- oxides of various elements. Sink of Pollutants. Green House Effect Acid Rain Impact of Acid RAin on TajMAhal Photochemical smog. Ozone Hole Biological oxygen demand and chemical oxygen demand. strategies to control Environmental Pollution Green chemistry. project need to be submitted after the summer vacation in a project file using A4sheet paper. you can use your own creative ideas to cover the topic listed. The content listed above can be represented by poster . Each content must be covered. you can refer to the last unit on Environmental chemistry of class 11  syllabus. Task 2 : Chemistry Holiday Assignment The Following Work Need to be Done In Chemistry Register during the summer Break. The Following Assignment would Help You to Revise the Concept l

DAY 4 21.5.20 GOOD MORNING BOYS, The next practical to be written in your file is detection of Nitrate and detection of sulphate. Learning Outcomes : students will be able to write the experiment in their file. identify Nitrate and sulphate. Learn the test. Refer to the image to write the experiment in your file. THATS ALL FOR THE DAY TAKE CARE STAY SAFE

Day 3 20.5.20 Good Morning Boys, I hope you have done your paper well , now we continue with classification of elements. Learning Objective student will be able to  state the modern periodic law Describe the modern periodic table Modern Periodic Law : Moseley modified Mendeleefs periodic law. He stated   “Physical and chemical properties of elements are the periodic function of their atomic numbers. ” It is known as modern periodic law and considered as the basis of Modern Periodic Tabl e . Structural Features of Long Form of Periodic Table 1. Long form of Periodic Table has 18 groups and seven periods . 2. The horizontal rows are called  periods. First period  ( 1 H –  2 He) contains 2 elements. It is the shortest period Second period  ( 3 Li –  10 Ne) and  third period  ( 11  Na –  18 Ar) contain  8 elements each. These are short periods. Fourth period  ( 19 K –  36 Kr) and  fifth period  ( 37 Rb –  54 Xe) contain 18 elements each. These are long peri

Day 2 19.5.20 Good Morning Students, we will be revising the concept of empirical formula and molecular formula. and we would also be revising the concepts of stucture of atom through google meet and blogs. Learning outcomes : student will be able to Recall the method for calculating empirical and molecular formula. Apply formula Revise the theories of quantum mechanical model of atom. Empirical Formula And Molecular formula An empirical formula represents the simplest whole number ratio of various atoms present in a compound. Molecular formula shows the exact number of different types of atoms present in a molecule of a compound. steps Calculation of Empirical formula : Step 1:- Conversion of mass per cent to grams. Step 2:- Convert into number moles of each element Step 3:- Divide the mole value obtained above by the smallest number In case the ratios are not whole numbers, then they may be converted into whole number by multiplying by the suitable coe