3 2009年北京市海淀区中考化学二模试卷（32009 years in Beijing city of Haidian District senior high school entrance examination chemistry the second mock exam papers）.docVIP

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3 2009年北京市海淀区中考化学二模试卷（32009 years in Beijing city of Haidian District senior high school entrance examination chemistry the second mock exam papers）.doc

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3 2009年北京市海淀区中考化学二模试卷（32009 years in Beijing city of Haidian District senior high school entrance examination chemistry the second mock exam papers）

3 2009年北京市海淀区中考化学二模试卷（32009 years in Beijing city of Haidian District senior high school entrance examination chemistry the second mock exam papers） 32009 years in Beijing city of Haidian District senior high school entrance examination chemistry the second mock exam papers The relative atomic mass may be used H-1 C-1 2 N-14 O-16 Na-23 Mg-24 S-32 Cl-35.5 Cu-64 Little information: the solubility of some alkali and salt (20 C) cation anion Ca2 + Mg2 + Fe3 + Cu2 + Ba2 Fe2 + Oh tiny No No No dissolve No CL dissolve dissolve dissolve dissolve dissolve dissolve No tiny - No No No tiny dissolve dissolve dissolve No dissolve Volume 1 (choice of a total of 25 points) One every day, with only 1 options, a total of 25 items, each item of 1 points, a total of 25 points. There is great correlation between the 1. elements in the human body and the earths crust elements, all of the most abundant elements in human body and the earths crust is () A. B. C. D. aluminum iron carbon oxygen 2. the following process mainly depends on the chemical change is the () 3. the following substances belong to the pure substance is () A. B. C. D. dry ice milk sauce vinegar 4. the following substances are made of molecules (is) A. diamond B. C. D. copper sodium chloride water 5. the following symbols represent two of the hydrogen molecule is () A.H B.2H2 C.H2 D.2H 6. below is the commonly used desiccant in food, the main component is calcium oxide, the substance belongs to () A. B. C. D. salt alkali acid oxide The following 7. related substances use accounts, is not correct () A. dry ice can be used for artificial rainfall B. ash (including K2CO3) to K C. D. can be used to do the fuel oxygen diamond cut glass 8. below is correct (Experiment) 9. optical fiber is high technology indispensable material in the information society, the main ingredient is silica. Silica, silicon (valence) A.2 B.0 C.2 D.4 10. home decoration needs of various materials. The following materials belong to organic synthesis ma