→ Chemistry - Metallic Bonding → Start Learning / Flashcards Téléchargement MP3

question		réponse
What type of bonding is found in metals? commencer à apprendre		Metallic bonding
What is metallic bonding? commencer à apprendre		The strong electrostatic attraction between positive metal ions and delocalised electrons.
Why do metals conduct electricity? commencer à apprendre		Delocalised electrons are free to move and carry charge.
Why do metals have high melting and boiling points? commencer à apprendre		Strong electrostatic forces between ions and delocalised electrons need lots of energy to overcome.
Why are metals malleable? commencer à apprendre		Layers of atoms can slide over each other without breaking the bonding.
What is an alloy? commencer à apprendre		A mixture of two or more elements, usually metals
Why are alloys harder than pure metals? commencer à apprendre		Different-sized atoms disrupt the layers so they cannot slide easily.
What is steel mainly made from? commencer à apprendre		Iron and carbon.

Chemistry - Metallic bonding