Задание 10 | Как решить на максимум? | Химия ОГЭ | Умскул

👉 Grab my guide "All Inorganic Materials for the OGE in Diagrams" from the pinned Telegram channel: https://t.me/+THQJo64bMzc0YTFi I'm Alexandra Lebedeva, preparing for the OGE in chemistry at the Umschool online school. 3,704 of my students have already received an A on the exam. Preparing with me means not only high-quality materials, but also support throughout the entire learning process with incredible faith in each student. 🍓 Prepare for the OGE with Umschool now to ensure you get the best grades. Follow the link to sign up or ask a question: https://short.umschool.net/iXsi We'll create a personalized learning track for you in 4 subjects so you won't burn out and will help you achieve the scores you dream of! With our teachers, you'll definitely understand and love the subject and learn about all the pitfalls of exams. A little about Umskul: — Every eighth student achieving perfect scores in Russia in 2025 studied at Umskul. — We've trained 4,900+ students achieving perfect scores. — 47,000+ of our students have passed the Unified State Exam with a score of 90+. — 80,000+ excellent students have passed the Basic State Exam. — Over 9 years, we've prepared 600,000+ students for the Unified State Exam and Basic State Exam. 🔔 Subscribe to the channel, like it, and click the bell to stay up to date with new videos! 💙 Watch my videos and live broadcasts on VK Video: https://vk.cc/cDzdo5 00:00 Features of Task #10 and its difficulty 00:36 What the task is (structure and points) 01:58 Elimination as the main solution method 02:24 Review of useful materials and files for preparation 03:44 Properties of oxides and interaction with water 04:53 Reduction of metals from their oxides 05:30 Life hacks for amphoteric compounds 06:17 Reactions of alkalis with metals and non-metals 07:07 Analysis of practical example #1 (Aluminum, alkali, salt) 08:28 How to test the activity of metals in reactions with salts 11:20 Elimination of options when working with alkalis 12:20 Rules for the interaction of salts (ion exchange reactions) 15:00 Signs of reactions: Gases, Precipitates, and Unstable Compounds 16:49 Case Study #2 (Iron and Oxides) 19:39 Specifics of Amphoteric Oxides Using Al2O3 as an Example 20:41 The Nature of Oxides and Working with Acidic Oxides 23:11 A Summary of Life Hacks for Quick Solutions 25:15 Code Words for Reactions with Alkalis 26:31 The Main Rule of Simple Substances 27:11 Conclusion and a Call to Practice #umskul #oge #chemistry