Organizing the Elements - 3rd Period by Shawn Gray https://padlet.com/sciencegray/bh46n531jt72 How did the periodic table come to be? en-us 2017-11-07 15:13:11 UTC 2017-11-07 17:16:38 UTC hello@padlet.com Samantha & Morgan https://padlet.com/sciencegray/bh46n531jt72/wish/204422575 ~What problem is there wit organizing elements by increasing atomic mass? 
They wouldn’t be place with the elements that it is similar to
~how did Mosley reorganize the periodic table?
He determined an atomic number for each known element ( in order)
~what is periodic law?
When elements are arranged in increasing atomic number, there is a periodic repetition of their physical and chemical properties.
~How does IUPAC organize the columns on the periodic table?
They numbered the groups from left to right 1 through 18
~How do elements change as you move from left to right with invisible a row on the periodic table?
Across a period, the properties of elements become less Metallica and more nonmetallic.]]> 2017-11-07 16:02:18 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204422575 The realist Metals: Callie, Christina, Savannah https://padlet.com/sciencegray/bh46n531jt72/wish/204422786 Definition: good conductors of heat and electric current.
Freshly clean/cut piece of metal has high muster or sheen.
Sheen is caused by the metals ability to reflect light.
Solid at room temperature except mercury. 
Can be drawn into wires, ductiles. 
Most can be hammered into sheets without breaking and are malleable. 
Properties can determine how they are used.]]> 2017-11-07 16:02:37 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204422786 Non-Metals lorenzoarellano433 https://padlet.com/sciencegray/bh46n531jt72/wish/204423240 Non-Metals are one of the three classes of elements. 
Properties of non-metal: There is a greater variation in physical properties among non-metals than amoung metals. Most non-metals are gases at room temperature. A few are solids. One non-metal, bromine, is a liquid at room temperature. 
Different from metals: Non-metals have opposite properties of metals. Non-metals are poor conductors of heat and electric currents. Solid non-metals are brittle and they shatter easily. 
Location of Non-metals: They are in the upper right corner of the periodic table.

By Emily Steinach, Addison Newman, Jessi Kresl ]]> 2017-11-07 16:03:21 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204423240 https://padlet.com/sciencegray/bh46n531jt72/wish/204423244 Scientists needed a way to organize the elements do they could answer questions about them.]]> 2017-11-07 16:03:21 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204423244 Who was Dmitri Mendeleev ? https://padlet.com/sciencegray/bh46n531jt72/wish/204423568 A Russian chemist and teacher, who published a table of the elements ]]> 2017-11-07 16:03:53 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204423568 Nonmetal Properties https://padlet.com/sciencegray/bh46n531jt72/wish/204423821 -Poor conductor of heat and electricity (carbon in the form of graphite is the only exception)
-Nonmetals in a solid form tend to be fairly brittle
-Majority of nonmetals are gases at room temperature (however some like sulfur and phosphorus are solids and bromine is a liquid)

]]> 2017-11-07 16:04:17 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204423821 Nonmetals https://padlet.com/sciencegray/bh46n531jt72/wish/204424143 There’s so much variety among nonmetals that it’s hard to give them a set of general properties]]> 2017-11-07 16:04:42 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204424143 https://padlet.com/sciencegray/bh46n531jt72/wish/204424236 Organized into triads]]> 2017-11-07 16:04:51 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204424236 Location https://padlet.com/sciencegray/bh46n531jt72/wish/204424360 Metalloids are found at the border in between metals and non metals.]]> 2017-11-07 16:05:02 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204424360 https://padlet.com/sciencegray/bh46n531jt72/wish/204424524 Triad- set of 3 elements with similar properties specifically chemical]]> 2017-11-07 16:05:15 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204424524 Who was Dmitri Mendeleev? https://padlet.com/sciencegray/bh46n531jt72/wish/204424761 He was a Russian chemist and teacher and he was we first to arrange the elements in order of increasing atomic mass. ]]> 2017-11-07 16:05:32 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204424761 What problem is there with organizing elements by increasing atomic mass? https://padlet.com/sciencegray/bh46n531jt72/wish/204425058 Elements are grouped based on properties, but with atomic masses, the elements with similar properties wouldn’t be placed in a group]]> 2017-11-07 16:05:56 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204425058 Describe the process he used to create his table https://padlet.com/sciencegray/bh46n531jt72/wish/204425238 He wrote the properties of each element on a separate note card. He moved the cards around until he found an organization that worked. ]]> 2017-11-07 16:06:12 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204425238 Nonmetals https://padlet.com/sciencegray/bh46n531jt72/wish/204425259 In the periodic table, they’re located on the upper right side (except for hydrogen because hydrogen is special)]]> 2017-11-07 16:06:14 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204425259 https://padlet.com/sciencegray/bh46n531jt72/wish/204425267 Triad- Bromine, Iodine, Chlorine

]]> 2017-11-07 16:06:15 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204425267 The real metals https://padlet.com/sciencegray/bh46n531jt72/wish/204425587 80 percents of the elements on the periodic table are metals.
You mostly find them in the transition metals on the periodic table
They are good conductors of heat and electricity, it would have high luster or sheen if they are freshly cleaned or cut
They are mostly solids at room temperature except for mercury]]> 2017-11-07 16:06:39 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204425587 https://padlet.com/sciencegray/bh46n531jt72/wish/204425981 Not all elements could be organized into triads so it didn’t work]]> 2017-11-07 16:07:12 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204425981 Process used to create the table https://padlet.com/sciencegray/bh46n531jt72/wish/204426261 He wrote we properties of each element on different note cards and rearranged them until he found an organization that worked. ]]> 2017-11-07 16:07:33 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204426261 https://padlet.com/sciencegray/bh46n531jt72/wish/204426770 The average of 2 elements was close to 3rd elements atomic mass]]> 2017-11-07 16:08:14 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204426770 How was table organized? https://padlet.com/sciencegray/bh46n531jt72/wish/204427308 Order of increasing atomic mass]]> 2017-11-07 16:09:01 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204427308 How did Moseley reorganize the periodic table? https://padlet.com/sciencegray/bh46n531jt72/wish/204427430 By increasing atomic ]]> 2017-11-07 16:09:14 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204427430 What was significant about the spaces( or question marks) on his table https://padlet.com/sciencegray/bh46n531jt72/wish/204427434 He predicted that other elements would be discovered and fill those spaces. He also predicted what their properties would be based on their locations in the table.]]> 2017-11-07 16:09:14 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204427434 Nonmetals, again https://padlet.com/sciencegray/bh46n531jt72/wish/204427492 Nonmetals generally have properties opposite to that of metals (surprise)]]> 2017-11-07 16:09:19 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204427492 Significance of spaces https://padlet.com/sciencegray/bh46n531jt72/wish/204427738 He predicted that elements would later fill those spaces and started to predict their properties based on their location on the table. ]]> 2017-11-07 16:09:44 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204427738 What is the periodic law? https://padlet.com/sciencegray/bh46n531jt72/wish/204428086 When elements are arranged in increasing atomic # their physical and chemical properties have repition]]> 2017-11-07 16:10:16 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204428086 Searching for an organizing principle https://padlet.com/sciencegray/bh46n531jt72/wish/204428284 Scientists needed a way to organize the elements so they know when they have discovered all the elements

Early chemists used the properties of elements to sort them into groups

The periodic tables were organized into triads which are groups of three elements with similar properties

Chlorine, bromine and iodine are an example of a triad

Not all eme te can be grouped into triads and dobereiner noticed a pattern which was that one element of each triad tended to have values that fell midway between those of the other two elements



]]> 2017-11-07 16:10:36 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204428284 Elements https://padlet.com/sciencegray/bh46n531jt72/wish/204428391 The elements that are metalloids are: boron, silicon, germanium, arsenic, antimony, tellurium, and astatine.]]> 2017-11-07 16:10:43 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204428391 https://padlet.com/sciencegray/bh46n531jt72/wish/204428789 2017-11-07 16:11:18 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204428789 How does IUPAC organize columns in the periodic table? https://padlet.com/sciencegray/bh46n531jt72/wish/204429088 By labeling groups as numbers 1-18 going from left to right]]> 2017-11-07 16:11:48 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204429088 How was his table organized? https://padlet.com/sciencegray/bh46n531jt72/wish/204429305 He organized his periodic table in order of increasing atomic mass]]> 2017-11-07 16:12:10 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204429305 How do elements change as you move from left to right within a row on the periodic table? https://padlet.com/sciencegray/bh46n531jt72/wish/204430768 They become less metallic and more nonmetallic]]> 2017-11-07 16:14:33 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204430768 More facts https://padlet.com/sciencegray/bh46n531jt72/wish/204432930 80% of the periodic table is metals. 
They are found in the middle, left, and bottom of the table.]]> 2017-11-07 16:17:40 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204432930 Properties https://padlet.com/sciencegray/bh46n531jt72/wish/204433247 Metalloids have similar properties to those of metals and non metals; however, metalloids have the capability to (under certain circumstances) behave like a metal or a non metal.]]> 2017-11-07 16:18:09 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204433247 Properties depending on Conditions https://padlet.com/sciencegray/bh46n531jt72/wish/204436743 Take silicon for example. On its own, silicon is a poor conductor of electricity. However, when it’s mixed with some boron, it becomes a great conductor of electricity.]]> 2017-11-07 16:22:55 UTC https://padlet.com/sciencegray/bh46n531jt72/wish/204436743