What is metallic bonding?
The electrostatic force of attraction between positive charged metal ions and sea of delocalised electrons. (～￣▽￣)～
State 3 differences between ionic and simple covalent compound.
(ions&molecules)(strong 'EF'&weak inter. force)(transfer&sharing of e)(nm+m&nm+nm)(high&low MP/BP)(s&l/g at room temp.)(non/volatile)...etc. ヾ(•ω•`)o
How does ionic compound conduct electricity? Why?
In aqueous/molten state, because ions cannot move freely in solid state. (○｀ 3′○)
Why does graphite conduct electricity?
1 carbon atom is bonded to 3 others in graphite (carbon - 4 valence electrons), thus the delocalised electrons can move along the layers...(o゜▽゜)o☆
What is the intermolecular force between simple covalent molecules called?
Van Der Waals Forces. (⊙_(⊙_⊙)_⊙)
Why are metals malleable and ductile?
Metal ions are arranged regularly in layers. When force is applied, the layers can slide over each other, forming new bonds and shape. (⊙_⊙)？
Draw out the electronic structure of Calcium chloride. (*hint* - clearly state out the ion charge, electronic config.)
Answers will be given later.（〃｀ 3′〃）
State 3 properties of metallic molecules/compounds that can be easily differentiated from the two other compounds (ionic / covalent).
lustrous, malleable, ductile, some are magnetic (Fe, Ni, Co), good conductors of heat and electricity in both state of solid and liquid...etc. (ง •_•)ง
What is this?
Silicon (IV) oxide.
What is an allotrope? Provide an example and what allotropes are they of.
Atoms of the same element but with different structure. For example diamond and graphite, they are allotropes of carbon. (/≧▽≦)/
Describe buckyball/ buckministerfullerene (*hint* - uses and properties)
(Uses - catalyst, lubricant, drug delivery, cutting tool), (Properties - 12 pentagons & 20 hexagons, high MP/BP, Hard) (ToT)/~~~
I dissolve in organic solvent, I have weak intermolecular forces, I am unable to conduct electricity at any state and I am very volatile. What am I?
Simple covalent compounds/molecules. (^._.^)ﾉ
What is ionic bonding?
The electrostatic force of attraction between oppositely charged ions from non-metal and metal by transfer of electrons. o((>ω< ))o
Draw out the electronic structure of Methane. (*hint* - clearly state out covalent bond e.g. single covalent bond, double covalent bond)
Answers will be given later. ο(=•ω＜=)ρ⌒☆
My bonds are hard to break, I can conduct electricity when I am in molten state, and I can easily change shape. What am I?
Metal, metallic compunds/molecules. (๑•̀ㅂ•́)و✧
Describe silicon(IV) oxide. (*hint* - structure and properties)
(Stucture - similar to diamond, tetrahedral 3D shape, 1 Si is bonded to 4 O2),(Properties - similar to diamond, hard, colourless crystals, high MP/BP) ผ(•̀_•́ผ)