1 / 9

Alkaline Earth Metals

Alkaline Earth Metals. By Hannah Morris, Laura Way, and Christine Coy. Information. Group name: Alkaline Earth metals Group number: 2 Element symbols: Be (Beryllium) Mg (Magnesium) Ca (Calcium) Sr (Strontium) Ba (Barium) Ra (Radium) Electron Configuration: ns 2

fancy
Download Presentation

Alkaline Earth Metals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Alkaline Earth Metals By Hannah Morris, Laura Way, and Christine Coy

  2. Information • Group name: Alkaline Earth metals • Group number: 2 • Element symbols: • Be (Beryllium) • Mg (Magnesium) • Ca (Calcium) • Sr (Strontium) • Ba (Barium) • Ra (Radium) • Electron Configuration: ns2 • State of matter: Solid • Element classification: metal • Special group name: Alkaline Earth Metals

  3. Beryllium • Physical Properties: • Steel gray, light-weight, brittle • Melting point: 1287⁰C • Good conductor of electricity and heat • Not radioactive, but very toxic • General Chemical Properties: • Unexpectedly inert • Not reactive with air, water or even heat • Not found free in nature  compound found in rocks and soil • Beryllium foil is used in x-rays and integrated circuits • It is found in gemstones like aquamarine and emerald

  4. Magnesium • Physical Properties: • Grayish-white and fairly tough • Melting point: 650⁰C • Good conductor of electricity and heat • Not radioactive naturally • General Chemical Properties: • Highly reactive • Hot water, oxygen, acids, and alkali metals • Not found free in nature  naturally occurring isotopes are Mg-24, Mg-25, Mg-26 • 25 grams in the average body, half of which are found in the bones • Used in pyrotechnics, bombs, and flares

  5. Calcium • Physical Properties: • Silvery-white and soft • Melting point: 842⁰C • Good conductor of electricity and heat • Not radioactive • General Chemical Properties: • Very reactive • Reactive to water • Not found free in nature  compounds are some of the most common on earth • Used for maintaining healthy bones and teeth • One of the most common elements in the earths crust

  6. Strontium • Physical Properties: • Silvery-yellow metallic and soft • Melting Point: 777°C • Good conductor of heat and electricity • Isotope Sr-90 is radioactive • General Chemical Properties: • Extremely reactive • Air and water • Not found free in nature • Sr-90 is used in cancer therapy and is essential to superficial radiotherapy • Used in producing glass for colored televisions

  7. Barium • Physical Properties: • Silvery white and soft • Melting point: 725°C • Good conductor of heat and electricity • Has dozens of radioactive isotopes • General Chemical Properties: • Very reactive • Water and all non-metals • Not found free in nature • Abundant in the earths crust, nuts, soils, seaweed, fish, and some plants • Barium is used in glassmaking, medicine, and electronics • Barium is used to give fireworks it’s greenish color

  8. Radium • Physical Properties: • Pure white and soft • Melting Point: 700°C • Good conductor of heat and energy • Radioactive • General Chemical Properties: • Most reactive in the family • Reacts violently to air and water • Not found free in nature  can be found in different earth levels, rocks, and soil • Used in luminous paint, medicine and cancer treatment • Used in clock hands until factory workers began to die from it

  9. Magnesium in Water http://www.youtube.com/watch?v=P_KFGCS2JSo&feature=related

More Related