九年级物理基础训练（Basic physical training for grade nine）.doc

九年级物理基础训练（Basic physical training for grade nine） The eleventh chapter: colorful material world........................ The first section of the universe and the micro world... Prepare your lessons before class Atoms and molecules 1. molecules 2. earth three 3. atom proton negative electron 4. nm length at a pile of small molecular single 5. solid liquid gas solid shape Class practice.......................................... 1.C 2.D 3.B 4.D 5. length is less than antibacterial (or bactericidal or superplastic ductility) 6. gas flow After class to consolidate... 1. 2. 3. molecular electronic materials are composed of tiny particles, the object is divided, and can be infinitely divided down 4.D 5.D 6.D 7.A 8. 9.B............................................ Test links 1. viral molecules, protons, 2.D... As to... .... Pre class............ 1. object matter 2. the amount of substance contained in the object m kg T g mg 3.kg g 4. attribute shape status position 5. horizontal tweezers zero line balance nut Class practice 1.B 2.C 3.B 4. scale invariant 5. left object quality size right sides in the central line and the amplitude of the swing is basically the same as static in the reading of 6.124 mass number and the scale line right after the central tour Farmar code on a scale Consolidate after class 1. the size of mobile code 2. 58.4 3.C 4.A tour 5.D 6.A balance on the horizontal desktop cannot balance the nut on the tour code 0 line at the C measure, should add weight or mobile tour code made the balance 7. 28.6 45.4 16.8 8. 3.2 9. zero balance right (1) rider zero balance the nut (2) by adjusting the right hand weights the objects and weights placed against the tray (3) should be to increase the weight of disc or right to move the rider (4) 47.4 The link in the exam... 1.C 2. added 81.6 right As to... Third section density Preview before class 1. 2. unit volume density characteristics of 3. P = m/V kg/m3 g/cm3 4. quality 1 * 1031 * 0.9 103 kilograms per cubic meter vol