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1. ELEMENTS
DIEGO PEREZ
I-AKY REGLA

2. WHAT IS ?
It is a kind of matter composed of atoms of the same class

3. NATURE OR
ARTIFICIALLY
Some elements found in nature and obtained from artificially
Examples of natural elements
Oxygen , Hydrogen , Lithium , etc.
Examples of artificial elements
Rutherfordio , Dubnium , Seaborgium , Bohrium , etc.

4. GROUPS
There are 4 types of groups: Alkali metals, halogens,
transitional metals and noble gases.

5. NOBLE GASES
The noble gases are the chemical elements in group 18 of the
periodic table. They are the most stable to have the maximum
number of valence electrons

6. HALOGENS
All halogens have 7 electrons in their outer shells, giving them an
oxidation number of -1.

7. ALKALI METALS
The alkali metals, found in group 1 of the periodic table, are very
reactive metals that do not occur freely in nature. These metals
have only one electron in their outer shell

8. TRANSITION METALS
There are a number of elements that are classified as transition
metals. They occupy columns 3 through 12 of the periodic table.

9. VALENCE ELECTRONS
The nunber of electrons in the outermost electron orbit.
Valence electrons do not equal the number protons.

10. ATOMIC NUMBERS
Is the number of protons found in the nucleus of an atom

11. NONMETALS
Non-metals are the elements in groups 4-6 of the periodic table.
Non-metals are not able to conduct electricity or heat very well.

12. METALS
Metals are good conductors of electricity. Are the elements in
elements 1-13.

13. The end