Chemistry

Chemistry, 23.07.2019 11:00, madelineb6243

The oldest known elements in the periodic table are the ones with

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Chemistry, 30.06.2019 23:00, fickllyd000

Questions about organizing the elements 1. compare and contrast mendeleev's periodic table with the modern periodic table. 2.in what order did mendeleev arrange the elements in the periodic table? 3.what do elements in the same column in the periodic table have in common? 4.what can you predict about an element from it's position in the periodic table?

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Chemistry, 10.07.2019 23:30, danielroytman1

1.oxygen (o) is a gas found in the 16th column of the periodic table. what statement is true about oxygen and the other elements in that column? a.all the elements in the column have similar chemical properties.b.all the elements in the column are in the same period.c.all the elements in the column are nonreactive.d.all the elements in the column have the same number of protons2.why are all of the substances on the periodic table classified as elements? all elements are pure substances.substances on the periodic table cannot be dissolved in water or other liquids.substances on the periodic table can be combined to form compounds and are therefore elements.substances on the periodic table cannot be broken down into other substances and are therefore elements.

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Chemistry, 02.08.2019 16:00, Mordred809

What fact about elements would explain why two elements would bond with the same element in the same proportion? a.the elements are on the same side of the staircase. b.the elements are in the same period on the periodic table. c.the elements are next to each other on the periodic table. d.the elements are found in the same column on the periodic table?

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Chemistry, 25.10.2019 18:43, leannamat2106

Henry moseley studied x-ray spectra of several elements in a row of periodic table.he found that each element had one more proton than the element immediately to its left. which statement best describes moseley's contribution to the modern periodic table? a.recognizing that elements in the periodic table have similar properties b.arranging elements in the periodic table based on their properties c.predicting the properties of missing several elements in the periodic table d.providing a basis for ordering elements in the periodic table

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