The document discusses the properties and uses of noble gases. It defines noble gases as elements that do not interact with other elements due to their complete electron orbits. It lists the noble gases as helium, neon, argon, krypton, xenon, and radon. It then discusses their physical properties, including being odorless and colorless gases at room temperature with low melting and boiling points. Finally, it provides examples of uses for some noble gases, such as using helium for balloons due to its light weight and neon for lighting due to its bright white color.

1. University of Garmian
C0llage of Education-
Evining Class
Department of
Chemistry
First stage

2. Definition of gases
Uses of gases

3.  Is a group of chemical elements
that do not interact with other
elements in a manner
 General, because their electron
orbits are complete and filled with
electrons, including these

4.  Helium, neon, argon, krypton, xenon, radon.
 These elements are in the eighth group of the
periodic order and they form
 0.93% of the atmospheric volume and 1.29%
of its mass.
 It is called inertia because it does not interact
with other elements ie it is inactive
 Chemically and metaphorically noble of it as
the nobles do not confuse with the general
any ordinary elements.

6.  1. Show as gases in room conditions.
 2. No color and no smell.
 3. Have 8 electrons equivalent.
 4. Produce vehicles only in special
circumstances.
 5. It is drawn from the air in liquefaction and
distillation.
 6. Found in the form of single-atom gases.
 7. Very weak internal attraction between their
atoms.
 8. It has very low melting and boiling grades.

7. Helium (He)
It is used for balloons and balloons because it is
lighter than air and does not burn or explode.

9.  Used to mark flight paths and gas lamps
because of the color of its light Bright White.

10.  It is used as liquefied gas in lighting lamps,
especially as it does not react with the
glowing metal wire even at high
temperatures.

11.  Radon is highly flammable and carcinogenic
by inhalation. Radon is used in the treatment
of certain types of cancers.

12. Density
Year of
discovery
Noble
gases
0.1785
g / cm 3
1895Helium
0.899
g / cm 3
1898Neon
1.784
g / cm 3
1890Argonne
3.778
g / cm 3
1898Krypton
5.88
g / cm 3
1898Xenon

13. https://ar.wikipedia.org/wiki
https://www.marefa.org
http://arabian-chemistry.com