The Periodic Table
- Created by: Lucy S
- Created on: 02-04-13 11:18
View mindmap
- The Periodic Table
- Elements are listed in order of increasing atomic number.
- Horizontal rows are called periods.
- Vertical columns are called groups.
- All elements in the same group have the same number of outer-shell electrons.
- The group number is the same as the number of electrons.
- Elements in the same group have similar chemical properties.
- Group 1 (Alkali Metals)
- All react with water to form alkaline solutions.
- Group 7 (Halogens)
- Form salts when they react with metals.
- Eg. Chlorine + sodium --> sodium chloride.
- Form salts when they react with metals.
- Group 8/0 (Noble Gases)
- Do not readily form compounds with other elements.
- Full outer-shell of electrons.
- None of the atoms either gains or loses electrons easily.
Comments
No comments have yet been made