PERIODIC TABLE OF ELEMENTS

Marissa DoddPeriod 4

October 25, 2012

Sunday, October 28, 12

The periodic table of elements was

developed in Russia.

✴ Where was it developed?

✴ How was it developed?

✴ Who developed it?

Mendeleev arranged the elements by atomic mass.

It was developed by a 35-year-old Dmitri

Mendeleev.

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HOW IS THE TABLE ORGANIZED?

•The periodic table is organized by atomic mass.

•From the top left it has the least atomic mass, but when you move farther to the bottom right everything gets heavier.

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WHAT IS THE RELATIONSHIP?

• Chemical elements in the same group tend to have similar chemical properties. Those in the same row have properties that change slowly from one end of the row to the other.

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ELEMENT #1

Carbon6C

12.011Ex: Pyrolytic graphite, diamond, coal.

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ELEMENT #2

Strontium38Sr

87.62Ex: Sensodyne Mint toothpaste, bone-building supplements,

glow-in-the-dark paint.Sunday, October 28, 12

ELEMENT #3

Chromium24Cr

51.996Ex: Cheap stainless steel, vapor deposited crystals,

phonograph needles.Sunday, October 28, 12

SOURCES CITED

www.periodictable.com

www.en.wikipedia.org/wiki/Periodic_table

www.en.wikipedia.org/wiki/Dmitri_Mendeleev

www.scienceclarified.com/Oi-Ph/Periodic-Table.html#b

Sunday, October 28, 12