→ Chemistry - Metallic Bonding → Оқуды бастаңыз / MP3 флэш-карталарын жүктеу

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

Chemistry - Metallic bonding