Timeline of atoms by Anonymous https://padlet.com/arhammehta2/8d2n0njt2vspe8h0 Le timeline en-us 2021-03-19 08:08:43 UTC 2025-10-24 02:19:08 UTC hello@padlet.com https://padlet.net/icons/png/1f4a1.png Arsenic 1649 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328915801
In Victorian times this was an ingredient in some medicines, though now we know 
it is poisonous! 
]]> 2021-03-19 08:11:58 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328915801 Phosphorus - 1669 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328930355
A dangerous element which glows in the dark and bursts into flames easily. 

]]> 2021-03-19 08:19:23 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328930355 Cobalt - 1735 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328931936 The name comes from 'Kobald', the German for goblin. ]]> 2021-03-19 08:20:10 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328931936 Hydrogen - 1766 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328934042 An explosive gas that used to be used in airships. 

]]> 2021-03-19 08:21:13 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328934042 Chlorine - 1774 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328935592 A poisonous green gas, used as a weapon in the First World War. ]]> 2021-03-19 08:22:02 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328935592 Tungsten - 1783 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328937256 The metal with the highest melting point of all-over 3400 °C. ]]> 2021-03-19 08:22:55 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328937256 Uranium - 1789 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328938305 The metal that was used in the first atomic bomb which was dropped in 1945. ]]> 2021-03-19 08:23:31 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328938305 Calcium - 1808 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328940364 2021-03-19 08:24:42 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328940364 Boron - 1808 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328941658 One of the ingredients in Pyrex glass. 

]]> 2021-03-19 08:25:19 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328941658 Bromine - 1826 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328942888 A nasty, smelly, red liquid! The name comes from the Greek for 'stench'. 

]]> 2021-03-19 08:26:01 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328942888 Aluminium - 1828 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328944207 A common element today, which was expensive in Victorian times. 

]]> 2021-03-19 08:26:46 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328944207 Helium - 1895 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328946275 An element that was discovered in the Sun. 'Helios' means sun in Greek. 

]]> 2021-03-19 08:27:48 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328946275 Radium - 1898 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328948232 It used to be painted on watch dials because it glows in the dark - but we now 
know it can be a cause of cancer. 
]]> 2021-03-19 08:28:42 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328948232 Rhenium - 1925 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328950265 A metal with a melting point of over 3000°C. ]]> 2021-03-19 08:29:31 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328950265 Einsteinium - 1952 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328952536 A radioactive element, named after the famous scientist Albert Einstein. 

]]> 2021-03-19 08:30:41 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328952536 Hafnium - 1970 arhammehta2 https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328954099 An element produced inside a nuclear reactor. 

]]> 2021-03-19 08:31:15 UTC https://padlet.com/arhammehta2/8d2n0njt2vspe8h0/wish/1328954099