Chemistry - Metallic bonding

 0    8 schede    guest3977688
inizia ad imparare

Scarica mp3 Stampa Gioca Testa il tuo livello
 
Domanda English Risposta English
What type of bonding is found in metals?
inizia ad imparare
Metallic bonding
What is metallic bonding?
inizia ad imparare
The strong electrostatic attraction between positive metal ions and delocalised electrons.
Why do metals conduct electricity?
inizia ad imparare
Delocalised electrons are free to move and carry charge.
Why do metals have high melting and boiling points?
inizia ad imparare
Strong electrostatic forces between ions and delocalised electrons need lots of energy to overcome.
Why are metals malleable?
inizia ad imparare
Layers of atoms can slide over each other without breaking the bonding.
What is an alloy?
inizia ad imparare
A mixture of two or more elements, usually metals
Why are alloys harder than pure metals?
inizia ad imparare
Different-sized atoms disrupt the layers so they cannot slide easily.
What is steel mainly made from?
inizia ad imparare
Iron and carbon.
Crea delle schede

Devi essere accedere per pubblicare un commento.