https://padlet.com/302528/f5bw5adg2hk4 en-us 2017-04-26 16:42:02 UTC 2017-04-26 16:44:10 UTC hello@padlet.com 302528 https://padlet.com/302528/f5bw5adg2hk4/wish/168433460 Carbon is found free in nature in three allotropic forms: amorphous, graphite, and diamond. Graphite is one of the softest known materials. Carbon is unique among the elements in the vast number of variety of compounds it can form.]]> 2017-04-26 16:42:46 UTC https://padlet.com/302528/f5bw5adg2hk4/wish/168433460 302528 https://padlet.com/302528/f5bw5adg2hk4/wish/168433950 2017-04-26 16:44:10 UTC https://padlet.com/302528/f5bw5adg2hk4/wish/168433950