Beryllium+by+Paula+B.

=__ // Beryllium by Paula B. // __= media type="custom" key="21894764" media type="youtube" key="vhGKO5NoxBk" height="315" width="560" This is my question: ¿What are the names of the minerals I named before?

Questions:


 * 1. What is the atomic number of aluminium?(Miguel) **


 * - 13 **


 * 2. What’s bronze?(Carmen, Salomé) **


 * - Bronze is an alloy that consist basically of copper, usually with tin as the main additive. **


 * 3. What percentage of the alloy chromium have?(Irene T.) **




 * 4. Could you say 2 applications of cobalt said in the video?(Rogelio) **


 * - It’s used in pigments and drills. **


 * 5. Who’s the pharaoh I mentioned in the video?(Álvaro) **


 * - Tutankamon **


 * 6. How many uses has lead?(Guillermo) **


 * - Batteries, solders, balances, alloys and cables **


 * 7. Where is mercury found?(Javier) **


 * - Finland, Russia, China, U.S.A., Peru, Tadschikistan, Kyrgyzstan and Mexico. **


 * b)Why is mercury liquid? **




 * 8. Why is nichrome so expensive?(Sara C.) **


 * - Because it contains nickel. **


 * 9. Tell an object made up of stainless steel. (Alberto) **


 * - Spoons **


 * 10. What colour is the collier in this video?(Yoan) **


 * - It has a gold-like colour. **


 * 11. Tell me an example of steel.(Lucía, Sara Q., Silvia) **


 * - Stainless steel. **


 * 12. What are the uses of titanium?(Carlos A.) **


 * - It’s used in cars, airplanes, submarines, buildings and astronauts’ customes. **


 * 13. Why is gold so expensive? **




 * 14. What are the characteristics of silver? **




 * 15. Name five objects of the video made of iron. (David) **


 * - Hammer, knife, horseshoe, propulser and glove. **


 * 16. Can we find magnesium in the free metal form? In which form can we found it? (Jazmín) **


 * - Yes. In salts and hydroxides. **


 * 17. How many forms does the tin have. Say the names. (Tania) **


 * - Gray tin and white tin. **


 * 18. What is the atomic number of zinc? (Ángel) **


 * - 30 **


 * 19. In which countries can you find platinum? (Carlos P.) **


 * - In Russia, South Africa and the U.S.A. **


 * 20. What is foundry? (Ginés, Alejandro, Pablo) **


 * - It’s the factory that produce metal parts by melting them. **


 * 21. Where does silver come from? (Irene P.) **




 * 22. Why is copper used in wires? (Alejandra) **




 * 23. What uses does the brass? (Andrea, Bea) **


 * - It's used in jewellery **


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