Intermolecular Forces & Physical Properties Branching The larger the surface area of a molecule, the more contact it will have with adjacent molecules The surface area of a molecule is?r...
始于2005年，國際名校廣泛認(rèn)可 全美Top10杜克大學(xué)支持舉辦 USMCA全美數(shù)學(xué)挑戰(zhàn)聯(lián)盟成員之一 杜克大學(xué) 青少年大會 DMMC報名后動 強(qiáng)調(diào)數(shù)學(xué)思維，激發(fā)興趣探索 證明數(shù)學(xué)進(jìn)階能力 鍛煉快速反應(yīng)、靈活性及團(tuán)隊協(xié)作能力 ...
Hydrogen Bonding Interactions Examples of compounds that can form hydrogen bonds are: Alcohols (contains an O-H bond) Ammonia (contains an N-H bond) Amines (contains an N-H bond) Carboxylic ...
Intermolecular Forces Intramolecular forces Intramolecular forces?are forces?within?a molecule and are usually covalent bonds Covalent bonds?are formed when the outer electrons of two atoms ...
Defining Electronegativity Electronegativity?is the power of an atom to attract the pair of electrons in a covalent bond towards itself The electron distribution in a covalent bond between e...
Electron Pair Repulsion & Shape The?valence shell electron pair repulsion theory?(VSEPR) predicts the shape and bond angles of molecules Electrons are?negatively charged?and will repel o...
Bond Length & Bond Strength Bond energy The?bond energy?is the energy required to?break?one mole of a particular covalent bond in the gaseous states Bond energy has units of kJ mol-1 &nb...
Covalent Dot-and-Cross Diagrams Covalent compounds The atoms in covalent compounds will?share?their outer valence electrons to achieve a?noble gas?configuration Dot-and-cross diagrams of cov...
Covalent Bonding Covalent?bonding occurs between two?non-metals A covalent bond involves the?electrostatic?attraction?between nuclei of two atoms and the bonding electrons of their outer she...
Physical Properties of Ionic Compounds Most ionic, metallic and covalent solids are?crystalline lattices The ions, atoms or molecules are arranged in a?regular and repeating arrangement Gian...
Ionic Radius Ionic radius The?ionic?radius?of an element is a measure of the size of an ion Ionic radii show predictable patterns Ionic radii?increase?with increasing?negative charge Ionic r...
Ionic Dot-and-Cross Diagrams Dot and cross diagrams?are diagrams that show the arrangement of the outer-shell electrons in an?ionic?or?covalent?compound or element The electrons are shown as...
