Organizing the Elements by Shawn Gray https://padlet.com/sciencegray/16kss3bs4n1v How did the periodic table come to be? en-us 2017-11-07 17:23:12 UTC 2025-10-31 01:58:18 UTC hello@padlet.com What were Dobereiner's triads? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477294 Dobereiner’s triads were a type of classification system. A triad is a set of three elements with similar properties. 

]]> 2017-11-07 17:26:32 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477294 Who was Dmitri Mendeleev? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477544 A Russian chemist and teacher that published a table of the elements ]]> 2017-11-07 17:27:01 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477544 What problem is there with organizing elements by increasing Atomic Mass? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477578 The chemical properties of the elements were a more accurate way to organize the elements instead of by Atomic Mass]]> 2017-11-07 17:27:05 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477578 Who was Dimitri Mendeleev? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477588 A Russian chemist and inventor, created the first version of the periodic table.]]> 2017-11-07 17:27:05 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477588 Why did scientists need to have a way to organize the elements? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477590 Scientists needed to have a logical way to organize the elements.]]> 2017-11-07 17:27:05 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477590 How does the number of metals compare to the number of elements? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477611 Metals take up 80% of the periodic table]]> 2017-11-07 17:27:07 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477611 Describe the properties of non-metals. https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477721 They are poor conductors of heat and electric current.
They are gases at room temperature and some are solids.

How are these different from metals?
They are completely opposite of metals.
Metals are good conductors and non-metals aren’t.
Metals are mostly solid at room temperature.
Metals are malleable.
Metals can reflect light.

Where do we find non-metals on the periodic table?
You can find non-metals in the upper right corner of the periodic table.]]> 2017-11-07 17:27:16 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204477721 Where do we find metaloids on the periodic table? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478052 They are the seven elements along the stair case]]> 2017-11-07 17:27:51 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478052 Why did scientists need to have a way to organize the elements? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478275 They needed a way to be able to know if there was a limit to the number of elements or if they had discoveredall of the elements. They had also discovered many elements in a short period, and needed a way to organize them.]]> 2017-11-07 17:28:15 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478275 Describe the process he used to create his table https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478352 He wrote the properties of each element on a separate notecard. This allowed him to move the cards around until he found an organization that worked.]]> 2017-11-07 17:28:21 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478352 Describe the process he used to create his table. https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478366 He wrote elements on notecards and moved them around until he found a pattern.]]> 2017-11-07 17:28:23 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478366 Where, in general, do we find metals on the periodic table https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478440 Metals can be found in the entirety of the D and F blocks, the majority of the S block apart from 1s2, and in the left part of the P block up to the stairstep. (Group 13 apart from Boron, Group 14 apart from Carbon, Silicon, Germanium, etc)]]> 2017-11-07 17:28:32 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478440 Where do we find the metalloids on the periodic table? lorenzoarellano433 https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478771 The metalloids are bordering the stair case. The stair case starts between B and Al and move it’s way down and stops between Pb and Bi]]> 2017-11-07 17:29:05 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478771 What problem isn’t there with organizing elements bY increasing atomic mass 1011096 https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478892 Mendelev didn’t know that the atoms of each element contain a unique number of protons

]]> 2017-11-07 17:29:17 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478892 How did early scientists group elements? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478965 They used triads to group the elements. A triad is a set of three elements with similar properties. ]]> 2017-11-07 17:29:25 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204478965 Give an example of a triad. https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479136 Chlorine, bromine, and iodine form one triad. They look different but have similar chemical properties.]]> 2017-11-07 17:29:44 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479136 Which elements are metalloids? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479351 Boran, silicon, germanium, arsenic, antimony, tellurium, and polonium ]]> 2017-11-07 17:30:09 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479351 How did early scientists group elements? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479565 Dobereiner published a classification system that grouped elements into triads. ]]> 2017-11-07 17:30:30 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479565 How was his table organized https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479566 He arranged the elements in his periodic table in order of increasing atomic mass.]]> 2017-11-07 17:30:30 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479566 How was his table organized? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479630 Mendeleev arranged the elements in his periodic table in order of increasing  atomic mass.]]> 2017-11-07 17:30:33 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479630 How did Moseley reorganize the periodic table 1011096 https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479674 He arranged the elements in order of increasing atomic number]]> 2017-11-07 17:30:39 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204479674 Describe the properties of non-metals. https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480117 They are poor conductors of heat and electric current. They are also gases at room temperature.

]]> 2017-11-07 17:31:24 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480117 What is periodic law 1011096 https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480159 When elements are arranged in order of increasing atomic number, there is a periodic religion of their physical and chemical properties]]> 2017-11-07 17:31:30 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480159 What was significant about the spaces on his table? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480205 He knew there would be elements to fill the missing spaces, but they had not been discovered yet.]]> 2017-11-07 17:31:36 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480205 What were Dobereiner's triads? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480249 A group of 3 elements with similar chemical properties.]]> 2017-11-07 17:31:40 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480249 How did Moseley reorganize the periodic table? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480762 He reorganized it by order of increasing Atomic Number]]> 2017-11-07 17:32:30 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480762 What was significant about the spaces (or question marks) on his table? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480817 He predicted that elements would be discovered to fill those spaces, and he predicted what their properties would be based on their locations in the table.]]> 2017-11-07 17:32:36 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480817 How does IUPAC organize the columns on the periodic table 1011096 https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480950 It is organized by metals, mataliods, non metals]]> 2017-11-07 17:32:47 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480950 What pattern did Dobereiner notice in his triads? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480973 One element in each triad tended to have properties with values that fell midway between those of the other two elements.]]> 2017-11-07 17:32:49 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204480973 What was the problem with using triads to categorize elements? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204481035 Needed a way to organize it into different groups numerically ]]> 2017-11-07 17:32:55 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204481035 What are some properties of metals https://padlet.com/sciencegray/16kss3bs4n1v/wish/204481136 High luster or sheen (caused by the ability to reflect light)
Solid at room temperature (except for Mercury, Hg)
Ductile- can be drawn into wires
Most are malleable- can be hammered into thin sheets without breaking]]> 2017-11-07 17:33:06 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204481136 How do the properties of metalloids compare to metals and non metals? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204481137 Metalloids are Different but can also be the same at conducting heat and electricity as a metal but can also be as poor at conducting heat and electricity as a nonmetal ]]> 2017-11-07 17:33:06 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204481137 How do elements change as you move from left to right within a row on the periodic table 1011096 https://padlet.com/sciencegray/16kss3bs4n1v/wish/204481736 Across a period, the properties of elements become less mattalic and more non metallic]]> 2017-11-07 17:34:02 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204481736 What pattern did Dobereiner notice in his triads? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482016 One element in each trail tended to have priorities with values that fell midway between those of the other two elements]]> 2017-11-07 17:34:27 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482016 How does the number of metals compare to the total number of elements? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482166 Most elements on we periodic table are metals—about 80%]]> 2017-11-07 17:34:44 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482166 What physical state are most metals at room temperature? What’s the exception? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482517 They are solids except for Mercury (Hg).]]> 2017-11-07 17:35:20 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482517 What is Periodic Law? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482781 When elements are arranged in order of increasing Atomic Number, there is a periodic repetition of their physical and chemical properties.]]> 2017-11-07 17:35:46 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482781 What was the problem with using triads to categorize elements? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482987 All of the known elements could not be grouped into triad.]]> 2017-11-07 17:36:08 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204482987 Where (in general) do the find metals on the periodic table? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204483534 In general you would find them in S-block, D-block and F-block]]> 2017-11-07 17:37:06 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204483534 How does the IUPAC organize the columns on the Periodic Table https://padlet.com/sciencegray/16kss3bs4n1v/wish/204483600 They numbered the groups from left to right 1-18]]> 2017-11-07 17:37:14 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204483600 Give an example of a triad https://padlet.com/sciencegray/16kss3bs4n1v/wish/204483688 Chlorine, Bromine, Iodine. They have similar chemical properties.]]> 2017-11-07 17:37:22 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204483688 How do elements change as you move from left to right within a row on the periodic table? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204484864 They become less metallic and more nonmetallic ]]> 2017-11-07 17:39:16 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204484864 What are some properties of metals https://padlet.com/sciencegray/16kss3bs4n1v/wish/204485054 *Metals are good conductors for heat and electrical currents
*They have the ability to reflect light
*Many are ductible, which means they can be drawn into wires
*Most are malleable, which means they can be hammered into thin sheets without breaking]]> 2017-11-07 17:39:36 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204485054 How are non-metals different from metals? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204485160 Metals
Good conductors of heat and electricity
Solid at room temperature 
Most are ductile(can be turned into a wire)
Malleable 

Nonmetal
Poor conductors of heat and electricity 
Gas at room temperature
Few are solid at room temperature
Solid non-metals are brittle

]]> 2017-11-07 17:39:47 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204485160 How do the properties depend on conditions. Give an example https://padlet.com/sciencegray/16kss3bs4n1v/wish/204485418 The reactivity of metalloids depend on the elements with which their reacting with. For example silicon is a metallic luster yet it is not an inefficient conductor. ]]> 2017-11-07 17:40:13 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204485418 Which elements are metalloids? lorenzoarellano433 https://padlet.com/sciencegray/16kss3bs4n1v/wish/204485764 Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium]]> 2017-11-07 17:40:47 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204485764 What physical state are most metals at room temperature? What’s we exception? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204487542 They are all solids at room temperature, except for mercury, mercury is a liquid at room temperature.]]> 2017-11-07 17:43:36 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204487542 Where (in general) do we find nonmetals on the periodic table? https://padlet.com/sciencegray/16kss3bs4n1v/wish/204489461 The top right area including the noble gases.]]> 2017-11-07 17:46:48 UTC https://padlet.com/sciencegray/16kss3bs4n1v/wish/204489461