Ionic Lattice Structures Most ionic, metallic and covalent solids are?crystalline lattices The ions, atoms or molecules are arranged in a?regular and repeating arrangement Giant ionic lattic...
Metallic Bonding: Definition Metal?atoms are tightly packed together in?lattice?structures When the metal atoms are in lattice structures, the electrons in their outer shells are free to mov...
Representing Dot & 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...
Dative Covalent Bonding In?simple?covalent?bonds, the two atoms involved share electrons Some molecules have a?lone?pair of electrons that can be donated to form a bond with an?electron-defi...
這兩年，美本在華招生幾乎年年“收緊”，英國(guó)則熱度暴漲、競(jìng)爭(zhēng)越發(fā)激烈。同時(shí)，國(guó)內(nèi)家長(zhǎng)們對(duì)于留學(xué)的熱情卻是年年拔高。 除了英美這兩個(gè)大熱門選手外，世界上那么多國(guó)家，還有哪些留學(xué)的優(yōu)質(zhì)目的地？ 我們?cè)窒磉^(guò)...
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 shells No?...
Ionic Bonding As a general rule,?metals?are on the?left?of the periodic table and?nonmetals?are on the?right-hand?side Ionic?bonding?involves the?transfer?of electrons from a?metallic?elemen...
The Ideal Gas Equation Kinetic theory of gases The kinetic theory of gases?states that molecules in gases are constantly moving The theory makes the following assumptions: That gas molecules...
Volumes & Concentrations of Solutions The?concentration?of a solution is the amount of?solute?dissolved in a?solvent?to make 1 dm3?of??solution The solute is the substance that dissolves...
