Metals

Metals Do Now: Think of a type of metal and describe it’s properties. What does it look like, how does it feel. Shiny, hard, smooth

Metals All of the elements in the blue squares left of the zig-zag line are metals

Physical Properties of Metals Shiny Malleability: can be hammered or rolled into different shapes Ductility: ability to change form without losing toughness Conductivity: ability to transfer heat and electricity

Chemical Properties Reactivity: ease and speed in which an element combines, or reacts with others Metals usually react by losing electrons Some metals very reactive (Group 1) Some are not-like Gold (Au) and Platinum (Pt) Other metals fall somewhere in between Reactivity tends to decrease from left to right on Periodic Table

Alkali Metals Group 1 React by losing 1 electron So reactive they are never found uncombined in nature As pure elements they are shiny and so soft that you can cut them with a plastic knife IMPORTANT Alkali metals Na (Sodium), K (Potassium), Lithium (Li) https://www.youtube.com/watch? v=m55kgyApYrY

Alkaline Earth Metals Group 2 Fairly hard Ductile Malleable Gray-white High melting and boiling point Good conductor of electricity Not as reactive as group 1 but more reactive than the other metals Not found uncombined in nature Mg (magnesium) Ca (Calcium) Mg combined with aluminum to make material for ladders, airplane parts, car wheels

Transition Metals Groups 3-12 Hard Shiny Good conductors of electricity Less reactive Have high melting and boiling points Familiar metals Iron (Fe) Copper (Cu) Nickel (Ni) Silver (Ag) Gold (Au) Mercury (Hg) Mad as a Matter https://www.youtube.com/watch?v= D5vKHqtJm-U Mercury in Fish https://www.youtube.com/watch?v= Q1ZA8ZrK3U4 Iron reacts slowly with air and water to form rust

Mixed Group Metals In groups 13-15, only some are metals Not nearly as reactive Familiar metals Aluminum (Al) Tin (Sn) Lead (Pb) Lead Poisoning https://www.youtube.com/watch? v=76RKSQgduVQ

Lanthanides Top row of elements found outside the table Soft Malleable Shiny High conductivity Mixed with other metals to make alloys

Actinides Below Lanthanides Uranium is in this group Used to produce energy in nuclear power plants All elements after uranium were created artificially in labs Nuclei are very unstable So unstable that they only last for a fraction of a second after they are made

Synthetic Elements Elements with an atomic number higher than 92 Not naturally found on Earth Made when nuclear particles are forced to crash into one another Done with a machine called particle accelerator https://www.youtube.com/watch ?v=ItrYpHsymfI Creating elements