The test Alkali metals and their compounds . A1. The elements of the main subgroup of Group 1 have the names: 1. Alkali

The test "Alkali metals and their compounds". A1. The elements of the main subgroup of Group 1 have the names: 1. Alkali metals 3. Alkaline earth metals 2. Halogens 4. Transition metals. A2. Indicate the correct statement: A) Alkali metals are silver-white soft substances; B) Alkali metals are light and low-melting metals. 1. Only B is correct 2. Only A is correct 3. Both statements are correct 4. Both statements are incorrect. A3. The most reactive alkali metal: 1. Na 2. K 3. Li 4. Cs. A4. The most low-melting metal: 1. Li 2. Cs 3. Rb 4. Na. A5. The metal that forms an oxide when it reacts with oxygen: 1. Li