Current courses to prepare for the Unified State Exam for 90+ 👇 https://webium.cc/chemists In this video, we will analyze task 7 in chemistry. We will go through all the problems from task 7. We will consider the properties of bases, amphoteric hydroxides, acids and salts. Ion exchange and dissociation. And how all this is applied in problems. Hello! My name is Taisiya Flamel. I am a teacher at the Webium online school. And together with you, we will prepare for the Unified State Exam in chemistry. A little about me: 🏆 In 2020, I prepared 51 students with a perfect score 😎 I have been teaching chemistry for the 8th year 👌 Graduated from the Chemistry Department of Moscow State University 💥 Compiled 3 collections to prepare for the Unified State Exam 👊 I was actively involved in science, wrote articles, participated in conferences, and received grants. Our preparation will include practice versions of the Unified State Exam in Chemistry. We will analyze the answers to difficult questions that may appear on the exam. Theory and assignments will no longer seem complicated and impossible. The preparation will be especially useful for those who are starting from scratch. Together, we will increase your final scores on the Unified State Exam 2020. And stop huffing and puffing over “I will solve the Unified State Exam”. Start preparing more productively! Gushchin and our webinars will help you with this. #FlamelUSE #ChemistryVebium #Vebium #TaisiyaFlamel #USE #ChemistryUSE #USEChemistry #USE2021 In this webinar, we will solve problems from task 2 of the Unified State Exam. Let's see how easy it is to understand the tasks and solve them. Timestamps: 00:00 - Getting ready for the web 01:47 - About me 03:55 - The most important cheat sheet 04:49 - Groups in the periodic table 05:41 - Periods in the periodic table 09:20 - Main and secondary subgroups 10:27 - s,p,d elements in the periodic table 14:50 - Nuclear charge according to the periodic table 18:08 - Atomic radius 20:03 - Example 1. Choose three elements that are in the same period and arrange them in order of increasing atomic radius 21:36 - Example 2. Choose three metal elements and arrange them in order of decreasing atomic radius 23:14 - Electronegativity 26:30 - Example 3. Choose three elements that are in the same period and arrange them in order of increasing E.O. 27:52 - Metals and non-metals 31:25 - Example 4. Select three non-metallic elements and arrange them in order of decreasing non-metallic properties of the corresponding simple substances 32:15 - Example 5. Select three metal elements and arrange them in order of increasing metallic properties of the corresponding simple substances 33:15 - Oxidizing agent and reducing agent 33:42 - Example 6. Select three elements that are in the same group and arrange them in order of increasing oxidizing properties of the simple substances they form 35:23 - Example 7. Select three metal elements and arrange them in order of increasing reducing properties of the simple substances they form 36:14 - Higher oxides and hydroxides 39:59 - Example 8. Select three elements that can form oxides and arrange them in order of decreasing acidic character of their higher oxides 41:34 - Hydrogen compounds 45:12 - Example 9. Select three non-metal elements and arrange them in order of increasing valence in hydrogen compounds 45:58 - Example 10. Select three elements from one group and arrange them in order of increasing basic properties of their hydrogen compounds 47:33 - -GROUP of preparation for the Unified State Exam