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 State of matter: Solid Element classification: metal Special group name: Alkaline Earth Metals

Beryllium Physical Properties: – Steel gray, light-weight, brittle – Melting point: 1287 ⁰ C – 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

Magnesium Physical Properties: – Grayish-white and fairly tough – Melting point: 650 ⁰ C – 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 grams in the average body, half of which are found in the bones Used in pyrotechnics, bombs, and flares

Calcium Physical Properties: – Silvery-white and soft – Melting point: 842 ⁰ C – 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

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

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

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

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