AP Chemistry teacher reacts to test results
40 views11/30/2022
AP chem teacher reacts to his student's results to the Unit 4 Test.
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| 00:00 - 00:03 | Grading of the Unit 4 Test has been completed |
| 00:04 - 00:05 | Class average is |
| 00:05 - 00:07 | lower than the last test. |
| 00:08 - 00:12 | The multiple choice section had an average score of 9 |
| 00:12 - 00:15 | and the FRQ section was 11 points |
| 00:17 - 00:19 | Well no matter |
| 00:19 - 00:21 | At least they understand net ionic equations |
| 00:24 - 00:26 | Mr. Gr |
| 00:27 - 00:28 | They... |
| 00:31 - 00:33 | Put NO3 in almost every equation |
| 00:34 - 00:36 | Even used it for the precipitate |
| 00:53 - 00:58 | If you haven't completed the Unit 4 test please leave the room. |
| 01:13 - 01:15 | This was supposed to be easy! |
| 01:15 - 01:17 | I changed the way I taught net ionics |
| 01:18 - 01:23 | I even included memes, some where even good |
| 01:25 - 01:28 | Why was it so hard |
| 01:29 - 01:31 | You only had to memorize |
| 01:31 - 01:34 | like two solubility rules! Just two |
| 01:34 - 01:37 | Group 1 metals are always soluble |
| 01:37 - 01:40 | And nitrates! All nitrates are soluble |
| 01:40 - 01:42 | The rules were confusing |
| 01:42 - 01:46 | We used them the whole unit! Everyone knew what a spectator ion was. |
| 01:46 - 01:48 | It was different from the practice |
| 01:48 - 01:52 | You have to show you can apply your knowledge on the test |
| 01:53 - 01:54 | Of course they were different. |
| 01:56 - 01:57 | How many times do I say |
| 01:57 - 02:00 | do all the steps like I show you |
| 02:00 - 02:03 | The units and states of matter are there to help you |
| 02:04 - 02:08 | You have to write the entire full equation before |
| 02:08 - 02:13 | you start the net ionic. Only the spectators are removed. |
| 02:14 - 02:16 | Only aqueous species dissociate in water |
| 02:17 - 02:21 | Nothing that is in a solid can be a spectator and charges always matter! |
| 02:27 - 02:29 | And then the half reactions |
| 02:30 - 02:34 | How many times did I say LEO the lion says GER |
| 02:34 - 02:36 | Reduction gains, oxidation loses |
| 02:41 - 02:42 | Elements don't have charges, only ions |
| 02:43 - 02:47 | Zinc ion is always plus two, silver ions are always plus 1 |
| 02:48 - 02:53 | But not when they are solid metal. |
| 02:54 - 02:56 | And how many diatomics do they think there are? |
| 02:56 - 02:59 | What the hell is Ag2? |
| 03:00 - 03:02 | Do they do that just to make it easier to balance? |
| 03:04 - 03:07 | At least we balanced the first equation correctly |
| 03:14 - 03:16 | No one came to me for tutoring |
| 03:19 - 03:23 | I had to be generous on the points I gave. |
| 03:25 - 03:26 | The AP exam won't |
| 03:31 - 03:33 | Next unit is Kinetics |
| 03:40 - 03:46 | You didn't even learn kinetics in baby chem |
| 03:46 - 03:49 | It's completely new material. |
| 03:53 - 03:56 | The bonus question was too hard though. |