（1）When compounds containing nitrates are heated，they not readily release all of the oxygen atoms in the compound. They decompose to give a compound that is a nitrite along with oxygen gas.
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二、歧化反应句型
常用词汇是disproportionation 和disproportionate
例如：
（1）Mn3+ is unstable；its disproportionation is spontaneous. （2）Manganate ion is also unstable in acidic solution；its disproportionation gives permanganate and manganese （II）ion.
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三、中和反应句型 常用词汇有名词neutralization和动词neutralize， 例如： （1）CaCl2 is a salt formed during the neutralization reaction of hydrochloric acid with calcium hydroxide. （2）A salt and water are formed when sulfuric acid neutralizes sodium hydroxide. (3) A neutralization reaction involves the combination of hydrogen ions and hydroxide ions to form water.
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Oxi• • • • • • • Oxygen：n. 氧气 Oxide： n. 氧化物 Oxidation： n.氧化作用 Oxidize： v. 使氧化 Oxidant： n. 氧化剂 Oxidizer： n. 氧化剂 Oxidable：adj. 可氧化的
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无机化合物典型的化学反应常用句型表达方式 一、分解反应句型 分解反应的词为decompose或decomposition，常用句型 如下：
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Reaction Types :
1. Direct Combination ( Synthesis) Reaction 2. Decomposition ( Analysis) Reaction 3. Single Displacement ( Substitution) Reaction 4. Metathesis ( Double Displacement) Reaction 调换，交换 5. Acid-base Reaction
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（4）Concentrated H2SO4 is a sufficiently strong oxidizing agent to oxidize Br– to Br2 and I– to I2. （5）Ammonia and CuO can undergo oxidation -reduction to form nitrogen.
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Neutron
3.3 Periodicity of Atomic Properties
• atomic radius • ionization energy • electron affinity • electronegativity
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3.6 Chemical Reactions reactants
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products
6. Oxidation-reduction (Redox) Reaction 7. Combustion Reaction 8. IsБайду номын сангаасmerization Reaction 异构化反应 9. Disproportionation Reaction 歧化反应 水解反应 [ 10. Hydrolysis Reaction
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四、氧化还原反应句型
常用词汇：oxide、oxidation、reduction和reduce （ 1 ） After purification ， the tin （ IV ） oxide is reduced with carbon to produce tin metal. （2）Calcium，strontium，and barium are obtained by the reduction of their oxides with aluminum. （ 3 ） Pb（IV）compounds tend to undergo reduction to com pounds of Pb（II）and therefore good oxidizing agents.
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（2）When compounds containing chlorates are heated， decompose to give the metal chloride and oxygen gas.
（3）Hydrogen peroxide undergoes decomposition in the presence of catalyst to produce oxygen gas and water. The iodide ion or MnO2 catalyzes this reaction. （4）Carbonic acid is a very unstable substance and decomposes to give carbon dioxide and water.
Chapter 3
• law of mass conservation：质量守恒定律 质量守恒定律 • law of definite proportions：定比定律 ： • law of multiple proportions：倍比定律 ：
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Proton Atomic nucleus Atom Electron Atomic number = the number of proton Mass number = the number of proton +neutron