Download presentation
Presentation is loading. Please wait.
1
Mapping the Periodic Table
2
How are elements different?
Elements are either metals, non-metals, and metalloids Each element has a different level of reactivity Reactive- indicates how likely an element is to undergo a chemical change
3
Metals Elements that: Conduct electricity & heat
Are malleable (bendable) Are shiny Most are solids at room temperature Found on periodic table - Groups 1-14*; most elements are metals
4
Reactive Metals Group 1- Alkali Metals: most reactive of ALL groups
Group 2- Alkaline Earth Metals: very reactive but not quite as much as Group 1 Both groups especially reactive with water.
5
Transition Metals Groups 3-12
Less reactive but are usually very malleable Very good conductors Gold, Silver, Iron, Copper, etc….
6
Rare Earth Metals Atomic numbers 57-71 are called Lanthanides.
Atomic numbers are called Actinides. Hard to isolate in pure form so they are called rare.
7
Non-metals These elements are: poor conductors not malleable
usually dull mostly gas at room temp Right side of periodic table
8
Halogens Group 17 Very reactive and love to form “salts”
9
Noble Gases Group 18 These gases do not react with any other elements, so they are considered “noble”
10
Metalloids Elements that have properties of both metals and non-metals
Most common metalloid is Silicon Silicon is used to make microchips for computers because it is a semiconductor
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.