https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4 en-us 2022-09-27 16:32:32 UTC 2025-10-21 06:09:15 UTC hello@padlet.com joseguillermosandoval1 https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315960954 - Prout noticed how there was many elements had atomic weights.
-Hydrogen was some sort of (primer matter).
-He build a table of relative molar masses that was based on the gas densities.]]> 2022-09-27 16:43:39 UTC https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315960954 joseguillermosandoval1 https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315961239 Triad 1: Alkali metals; lithium, pottasium and sodium.
Triad 2: Alkaline earth metals; strodium, barium and calcium.
Triad 3: Halogens; Bromide, Lodine...
Triad 4: Sulphur, Tellurium and Selenium.
Triad 5: Iron, Cobalt and Nickel.]]> 2022-09-27 16:43:48 UTC https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315961239 joseguillermosandoval1 https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315962043 - He arranged them in ascending order according to their atomic weights and discovered that the properties of every eighth element were the same.

- The law of octaves states that when the elements are arranged in ascending order of atomic mass, every eighth element has comparable properties. ]]> 2022-09-27 16:44:10 UTC https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315962043 joseguillermosandoval1 https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315962464  - Mendeleev "proposed to name the elements by 'periods' and 'groups', arranged with their atomic weights in ascending order, from left to right, within the same line down to the second and so on.

- In 1869 he published the first periodic table of the elements.]]> 2022-09-27 16:44:24 UTC https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315962464 joseguillermosandoval1 https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315964211 - Henry Moseley, in 1912, demonstrates that the periodic table should be ordered by atomic number.

-His main contribution to science was the quantitative justification of the concept of atomic number in Moseley's Law.]]> 2022-09-27 16:45:17 UTC https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2315964211 joseguillermosandoval1 https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2316530892 -Arragement of the chemical elements.
- Made it to see trends in the elements properties.]]> 2022-09-28 00:37:51 UTC https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2316530892 joseguillermosandoval1 https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2316533423 2022-09-28 00:39:52 UTC https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2316533423 joseguillermosandoval1 https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2316535030 2022-09-28 00:41:14 UTC https://padlet.com/joseguillermosandoval1/zh3wf3a7620e15o4/wish/2316535030