资源描述
按一下以編輯母片標題樣式,按一下以編輯母片,第二層,第三層,第四層,第五層,*,Formula(,化學式),Different kinds of formulae,Formula(,化學式),Chemical Shorthand,Different kinds of formula,Empirical formula(,實驗式),Ionic formula(,離子式),Molecular formula(,分子式),Structural formula(,結構式),Sodium chloride,Na,+,416,Cl,-,416,?,Sodium chloride,Empirical formula showing the simplest whole number ratio of atoms present.i.e.,NaCl,Ionic formula showing the simplest whole number ratio of ions present.i.e.Na,+,Cl,-,Water,Water,Empirical formula H,2,O,Ionic formula not applicable,Molecular formula showing the actual number of different atoms in a molecule.i.e.H,2,O,Structural formula showing the connection of the atoms in a molecule.,Ethane,Hydrogen,atom,Carbon,atom,Ethane,Empirical formula CH,3,Ionic formula not applicable,Molecular formula C,2,H,6,Structural formula,What do different kinds of formula show?,Empirical formula,Ionic formula,Molecular formula,Structural formula,What do different kinds of formula show?,Empirical formula showing the simplest whole no.ratio of atoms present.,Ionic formula showing the simplest whole no.ration of ions present.,Molecular formula showing the actual no.of different atoms in a molecule.,Structural formula,showing the connection of atoms in a molecule.,Summary,Sodium chloride,Water,Ethane,Empirical formula,Ionic formula,Molecular formula,Structural formula,Summary,Sodium chloride,Water,Ethane,Empirical formula,NaCl,H,2,O,CH,3,Ionic formula,Na,+,Cl,-,N.A.,N.A.,Molecular formula,N.A.,H,2,O,C,2,H,6,Structural formula,N.A.,Predication of formula of substances,Step 1 Classify the atoms present:metal or non-metal.,Step 2 Decide whether it is an ionic,covalent(simple molecular or giant covalent)substance.,Step 3 Use the concept of jig saw for ionic substances and the concept of hands for covalent substances,Examples,Constituent Particles,(,組成粒子),Formula(,化學式),Nature of bond,Silver atom,Oxygen atom,Lead(II)ion,nitrate ion,Carbon atom,Fluorine atom,Sodium ion,Hydrogensulphate,ion,Calcium ion,Hydroxide ion,Examples,Constituent Particles,(,組成粒子),Formula(,化學式),Nature of bond,Silver atom,Oxygen atom,Ag,2,O,Ionic,Lead(II)ion,nitrate ion,Pb,(NO,3,),2,Ionic,Covalent,Carbon atom,Fluorine atom,CF,4,Covalent,Sodium ion,Hydrogensulphate,ion,NaHSO,4,Ionic,Covalent,Calcium ion,Hydroxide ion,Ca(OH),2,Ionic,Covalent,Formula unit(,化學式單位),Formula can be used to represent a substance or amount of certain substance.,e.g.,NaCl,may represent,the substance sodium chloride,OR a pair of Na,+,and,Cl,-,ions,known as a formula unit of,NaCl,.,+,-,Microscopic Interpretation(,微觀詮釋),Symbolic Representation(,符號的表示),Sodium chloride(,氯化鈉),Macroscopic Observation(,宏觀觀察),NaCl,OR,Glossary(,詞彙),Bonding(,鍵),attraction between the particles.,Ion(,離子),electrically charged atom or molecule.,Ionic bond(,離子鍵),electrostatic attraction between oppositely charged ions.,Molecule(,分子),Small particle that can exit on its own.,Covalent bond(,共價鍵),electrostatic attraction formed by sharing of electrons between 2 non-metal atoms.,Intermolecular forces(,分子間力),a weak attraction between molecules discovered by van,der Waals,.,Relationship between different particles,Particle,Atom,Molecule,Ion,Relationship between different particles,Particle,Atom,Molecule,Ion,Cu,C,He,H,2,O,O,2,Ar,Na,Na,+,Cl,-,NO,3,-,
展开阅读全文