https://padlet.com/3008201/p9z29vzec28x en-us 2017-04-25 17:19:06 UTC 2024-11-23 07:00:49 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Xmastree.png 3008201 https://padlet.com/3008201/p9z29vzec28x/wish/168178715 Although it is metal you can still cut it with a knife]]> 2017-04-25 17:22:08 UTC https://padlet.com/3008201/p9z29vzec28x/wish/168178715 3008201 https://padlet.com/3008201/p9z29vzec28x/wish/168181815 About 20% of the weight of living organisms is carbon.

]]> 2017-04-25 17:31:01 UTC https://padlet.com/3008201/p9z29vzec28x/wish/168181815 3008201 https://padlet.com/3008201/p9z29vzec28x/wish/168183076 lime.” This makes sense since calcium is extracted from limestone, and also from marble and chalk. ]]> 2017-04-25 17:34:31 UTC https://padlet.com/3008201/p9z29vzec28x/wish/168183076 3008201 https://padlet.com/3008201/p9z29vzec28x/wish/168185332 Sodium is a vital element for living organisms. Of the twenty known isotopes of sodium, only one—Na-23—is stable.]]> 2017-04-25 17:40:29 UTC https://padlet.com/3008201/p9z29vzec28x/wish/168185332 3008201 https://padlet.com/3008201/p9z29vzec28x/wish/168188380 Potassium was the first elemental metal to be found through electrolysis. ]]> 2017-04-25 17:48:26 UTC https://padlet.com/3008201/p9z29vzec28x/wish/168188380 3008201 https://padlet.com/3008201/p9z29vzec28x/wish/168190147 It is an intensely white metal that quickly tarnishes to black in the presence of air. Interesting Radium Facts: Radium was discovered by Pierre and Marie Curie in 1898. They extracted the element from a sample of the mineral uraninite.]]> 2017-04-25 17:53:19 UTC https://padlet.com/3008201/p9z29vzec28x/wish/168190147 3008201 https://padlet.com/3008201/p9z29vzec28x/wish/168450364 This odorless, colorless gas has eight protons in the nucleus, and is pale blue in its liquid and solid states. ]]> 2017-04-26 17:31:07 UTC https://padlet.com/3008201/p9z29vzec28x/wish/168450364