九年级化学试题上学期期末模拟试（Ninth grade chemistry test last semester final simulation test）.doc

九年级化学试题上学期期末模拟试（Ninth grade chemistry test last semester final simulation test） Ninth grade chemistry test: last term, simulation test questions and answers Atomic mass: C 12 H 1 O 16 Ca 40 N 14 A multiple choice 1. Take the bottled drink out of the refrigerator and put it in the air. The water bead on the outer wall of the bottle soon shows that the air contains (). A. oxygen b. nitrogen c. carbon dioxide d. water vapor Human existence requires clean air. The following situations do not cause environmental pollution () A. setting off fireworks b. automobile exhaust c. coal combustion d. photosynthesis 3. Vitamin C (C6H8O6) is mainly found in vegetables and fruits, which can promote the growth and development of human body and strengthen the bodys resistance to disease. Recent studies have found that vitamin C also has anti-cancer effects. The following statement about vitamin C is correct () A. Vitamin C is an oxide B. The quality ratio of C, H and O in vitamin C is 12:1:16 C. Vitamin C consists of six carbon elements, eight hydrogen elements and six oxygen elements The number of atoms in C, H and O in vitamin C is 3:4:3 4. Air sealed container, to remove the oxygen from the combustion method, without mixing with other gases, the combules that can be used are () A. charcoal b. sulfur c. red phosphorus d. candles 5. Considering the environment of human existence, the ideal fuel for the future is () A. hydrogen b. gas c. coal d. oil 6. In addition to the use of iron stand, beaker and glass rod, the instrument required for the filtration operation is (). A. sprinkling of fine light b. tray balance c. evaporating dish d. funnel International use of the Chinese iron pan because of the iron pot () A. It is A simple B. It contains carbon, which is A mixture c. chemical nature is active D. It contains the iron elements needed by the body 8. Soak a cotton handkerchief in a solution of alcohol, then remove it after a uniform soaking, and ignite it with a fire. When the flame