Group 1 elements - Alkali Metals
- Created by: LunaShomeiRose
- Created on: 12-03-19 08:49
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- Group 1 - Alkali metals
- Reactive soft metals
- Low density (float)
- Have 1 electron in outer shell
- Reactive
- Little energy needed to overcome bonds
- Form ion1+ (ionic compound)
- white solid that dissolves in water to form colourless solution
- Similar properties
- Reactive
- As you go down group:
- More reactive (more shells, more distance between electrons & nucleus, less attraction, electrons easier lost)
- Lower BP / MP
- Higher relative atomic mass
- More reactive (more shells, more distance between electrons & nucleus, less attraction, electrons easier lost)
- React vigoroursly with water
- Alkali metal + water --> metal hydroxide + hydrogen gas
- Sodium + water --> sodium hydroxide + hydrogen
- more reactive alkali's react more violently, producing more energy
- Further down group - more energy produced
- Alkali metal + water --> metal hydroxide + hydrogen gas
- React vigorously heated with chlorine gas
- Alkali metal + chlorine gas --> metal chloride salt
- Sodium + chlorine --> sodium chloride
- Alkali metal + chlorine gas --> metal chloride salt
- Alkali metals react with oxygen to form metal oxides
- LIthium + oxygen --> lithium oxide
- Sodium + oxygen --> mixture of sodium oxide + sodium peroxide
- Potassium + oxygen --> mixture of potassium + potassium superoxide
- More reactive than transition metals. react more vigorously. Less dense, strong, hard. Lower MP / BP
- Reactive soft metals
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