Lesson one 2nd sec.pptx

Unit one Chapter one What is building unit of your body ? What id the building unit of your disk ?  Aristole postulation all matters are composed of four components , which are water , air , dust and fire “ G.R. It was believed that cheap...

Unit one Chapter one What is building unit of your body ? What id the building unit of your disk ?  Aristole postulation all matters are composed of four components , which are water , air , dust and fire “ G.R. It was believed that cheap metals can be changed into precious ones Boyle postulation He gave the first definition to the element as a pure simple substance that cannot be changed to simpler forms by traditional chemical methods “ Try booklet page 1 Try booklet page 3 1- The matter is composed of very minute particles called atoms 2- The atom is one solid part and undividable 3- The atoms of each element are different from the atoms of any other element  In 1897 it was known that gases do not conduct electricity under normal condition of pressure and temperature. However gases could conduct electricity in discharge tube with pressure ranges between 0.01- 0.001 mmHg then the potential difference of about 10000volts then a stream of invisible rays was emitted from the cathode causing a fluorescent glow , this rays called “ Cathode rays “ What are Dalton atomic theory postulations Digital clock timers 0:01 0:02 0:03 0:04 0:05 0:06 0:07 0:08 0:09 0:10 0:11 0:12 0:13 0:14 0:15 0:16 0:17 0:18 0:19 0:20 0:21 0:22 0:23 0:24 0:25 0:26 0:27 0:28 0:29 0:30 0:31 0:32 0:33 0:34 0:35 0:36 0:37 0:38 0:39 0:40 0:41 0:42 0:43 0:44 0:45 0:46 0:47 0:48 0:49 0:50 0:51 0:52 0:53 0:54 0:55 0:56 0:57 0:58 0:59 1:00 1:01 1:02 1:03 1:04 1:05 1:06 1:07 1:08 1:09 1:10 1:11 1:12 1:13 1:14 1:15 1:16 1:17 1:18 1:19 1:20 1:21 1:22 1:23 1:24 1:25 1:26 1:27 1:28 1:29 1:30 1:31 1:32 1:33 1:34 1:35 1:36 1:37 1:38 1:39 1:40 1:41 1:42 1:43 1:44 1:45 1:46 1:47 1:48 1:49 1:50 1:51 1:52 1:53 1:54 1:55 1:56 1:57 1:58 1:59 2:00 End 0:01 0:02 0:03 0:04 0:05 0:06 0:07 0:08 0:09 0:10 0:11 0:12 0:13 0:14 0:15 0:16 0:17 0:18 0:19 0:20 0:21 0:22 0:23 0:24 0:25 0:26 0:27 0:28 0:29 0:30 0:31 0:32 0:33 0:34 0:35 0:36 0:37 0:38 0:39 0:40 0:41 0:42 0:43 0:44 0:45 0:46 0:47 0:48 0:49 0:50 0:51 0:52 0:53 0:54 0:55 0:56 0:57 0:58 0:59 1:00 1:01 1:02 1:03 1:04 1:05 1:06 1:07 1:08 1:09 1:10 1:11 1:12 1:13 1:14 1:15 1:16 1:17 1:18 1:19 1:20 1:21 1:22 1:23 1:24 1:25 1:26 1:27 1:28 1:29 1:30 End 0:01 0:02 0:03 0:04 0:05 0:06 0:07 0:08 0:09 0:10 0:11 0:12 0:13 0:14 0:15 0:16 0:17 0:18 0:19 0:20 0:21 0:22 0:23 0:24 0:25 0:26 0:27 0:28 0:29 0:30 0:31 0:32 0:33 0:34 0:35 0:36 0:37 0:38 0:39 0:40 0:41 0:42 0:43 0:44 0:45 0:46 0:47 0:48 0:49 0:50 0:51 0:52 0:53 0:54 0:55 0:56 0:57 0:58 0:59 1:00 End  Quizzes game https://quizizz.com/join?gc=71559763