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Emily Hoffman
Emily Hoffman
Looking at Amazing Sciencesites.google.comlascifair.org

The Periodic Table & Making New Elements

Please start with watching the video at the top of the column and then read the two articles that are below it.

Dmitri Mendeleev: Great Minds
youtube.com

Dmitri Mendeleev: Great Minds

1-This video looks at the life of Mendeleev
2-He created the basic layout of the periodic table looking at element properties
3-He left spaces in his table because he know that the element to fill that spot had not yet been found.
C- The Newly created elements still follow the patterns established on the original PT

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The Four "New" Elements & How We Got Them–Speaking of Chemistry
youtube.com

The Four "New" Elements & How We Got Them–Speaking of Chemistry

1- Elements are created in very small amounts
2- When an element is made it has a very short half life.
3- The 4 most recently created elements have been in the works for decades.
C- Man made elements have the same parts as naturally occurring elements.

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Development of the periodic table
sciencelearn.org.nz

Development of the periodic table

1- J Newlands noticed patterns of the elements before the tables creation.
2- Mendeleev created the known PT based on patterns beyond mass.
3- Nobel gases were not discovered for 25 years after the organization of the PT
C- Scientific discoveries are often based on learning from what the person before you did.

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Making New Elements
popsci.com

Making New Elements

1- Element 119 was made in Germany
2- Elements are made by fusing lighter elements together.
3- The scientists in Germany will be able to name their element.\
C- Very small amounts of a new element are made at any one time.

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The Periodic Table and the role of Mendeleev in its development
mendeleevperiodictableinfo.wee

The Periodic Table and the role of Mendeleev in its development

1- Only 63 elements were known when the firsts PT was created.
2- D.M. died in 1907.
3- Although nominated for a Noble Prize, he did not get it.
C- He made predictions about unknown elements.

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How to Make an Element — NOVA | PBS
pbs.org

How to Make an Element — NOVA | PBS

1- Creating a brand new element requires loading an atom's nucleus with more protons.
2- "An atom is composed of two parts: a nucleus and an electron cloud. The nucleus is in the heart of an atom and composed of positive particles called protons and neutral particles called neutrons. Negatively charged electrons buzz around the nucleus in the electron cloud."
3- In the last 75 years, scientists have added an additional 24 elements to the periodic table
C- New elements follow the same patterns as the original 63 on the table.

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