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Biblioteka

Homework: Becoming Familiar with Atoms of the Periodic Table

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Posljednje ažuriranje over 1 year ago
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Pitanje 1
1.

A) Who is credited for the creation of the periodic table?

C) Where and when was Dmitri born?

E) What prompted Mendeleev to begin to make his own vision of the periodic table?

G) How was he able to predict the properties of elements?

1
Pitanje 2
2.

Even though he never won a Nobel Prize, Mendeleev did have an element named after him.

In 1955, a scientist at U.C Berkely created an element with the atomic number 101. In 1963, this element officially became known as mendelevium. He is 1 of only 15 scientists to have an element named after them.

If you were a scientist, what would you like an element named after you to be called?

1
Pitanje 3
3.

Match the following

  • Negative charge (-)

  • Neutral charge

  • Found in the nucleus of an atom

  • Postive charge (+)

  • Found outside (the nucleus) in an electron cloud

  • Proton

  • Neutron

  • Electron

Pitanje 4
4.

Label all of the parts of this atom

Drugi mogući odgovor:
electron
3
electron cloud
nucleus
neutron
proton
2
Pitanje 5
5.

Look at the following diagrams. Use the information to identify the following atoms.

Empty dots = protons

black dots = neutrons

black dots on the outer lines = electrons

Drugi mogući odgovor:
Neon (Ne)
Aluminum Al
Oxygen (O)
Pitanje 6
6.

Look at the following diagrams. Use the information to identify the following atoms.

Empty dots = protons

black dots = neutrons

black dots on the outer lines = electrons

Drugi mogući odgovor:
hydrogen (H)
neon (Ne)
sulfur (S)

Pitanje 8
8.

A) Why was there confusion on the official names of elements before 1919?

C) What are the basic rules for naming elements? How was the conflict resolved?