Add Papers Marked0
Paper checked off!

Marked works

Viewed0

Viewed works

Shopping Cart0
Paper added to shopping cart!

Shopping Cart

Register Now

internet library
Atlants.lv library
FAQ
2,99 € Add to cart
Add to Wish List
Want cheaper?
ID number:890377
 
Evaluation:
Published: 03.02.2010.
Language: Latvian
Level: Elementary school
Literature: 2 units
References: Not used
Extract

Atommasa:
63,546 g/mol
Blīvums: 8920 kg/m3
Kušanas temperatūra:
1084,62°C
Vārīšanās temperatūra:
2562°C
Vēsture
Varu sāka izmantot Mazāzijā aptuveni 7000 gadu p.m.ē.
No rūdām to ieguva 3900 gadu p.m.ē. Ēģiptē
Antīkajā Romā varu ieveda galvenokārt no Kipras (Kypros) salas
No tās nosaukuma radies arī vara nosaukums latīņu valodā – cuprum.
Atrašanās dabā
Vara minerālu veidā:

halkopirīts CuFeS2
vara spīde Cu2S
Pusdārgakmens - malahīts (CuOH)2Co3…

Author's comment
Work pack:
GREAT DEAL buying in a pack your savings −4,48 €
Work pack Nr. 1116502
Load more similar papers

Atlants

Choose Authorization Method

Email & Password

Email & Password

Wrong e-mail adress or password!
Log In

Forgot your password?

Draugiem.pase
Facebook

Not registered yet?

Register and redeem free papers!

To receive free papers from Atlants.com it is necessary to register. It's quick and will only take a few seconds.

If you have already registered, simply to access the free content.

Cancel Register