初中常见相对原子质量及相对分子质量
相对原子质量 名称 氢 氦 碳 氮 氧 氟 氖 钠 镁 符号 H He C N O F Ne Na Mg 物质 一氧化碳 四氧化三铁 氧化铝 盐酸 氢氧化钙 硫酸钙 氯化亚铁 硫酸钠 氯化铜 硫酸锌 氯酸钾 过氧化氢 氧化镁 二氧化碳 三氧化二铁 五氧化二磷 硫酸 氢氧化钠 氧化铜 氢氧化镁
相对原子质量 1 4 12 14 16 19 20 23 24 化学式 CO Fe3O4 Al2O3 HCl Ca(OH)2 CaSO4 FeCl2 Na2SO4 CuCl2 ZnSO4 KClO3 H2O2 MgO CO2 Fe2O3 P2O5 H2SO4 NaOH CuO Mg(OH)2 名称 铝 硅 磷 硫 氯 氩 钾 钙 锰 符号 Al Si P S Cl Ar K Ca Mn 相对原子质量 27 28 31 32 35.5 40 39 40 55 物质 氢氧化钾 碳酸钙 硫酸亚铁 碳酸钠 硫酸铜 硝酸铵 过氧化钠 氯化铵 二氧化硫 氧化钙 氧化亚铁 水 碳 酸 氢氧化铜 氯化钙 氯化铁 氯化钠 氯化钾 氯化锌 高锰酸钾 名称 鉄 铜 锌 钡 银 金 铂 汞 碘 符号 Fe Cu Zn Ag Ba Pt Au Hg I 相对原子质量 56 63.5 65 108 137 195 197 201 127 相对分子质量 56 100 152 106 160 80 78 53.5 64 56 72 18 62 98 111 162.5 58.5 74.5 136 158 相对分子质量 相对分子质量 28 232 102 36.5 74 136 127 142 135 161 122.5 34 40 44 160 142 98 40 80 58 化学式 KOH CaCO3 FeSO4 Na2CO3 CuSO4 NH4NO3 Na2O2 NH4Cl SO2 CaO FeO H2O H2CO3 Cu(OH)2 CaCl2 FeCl3 NaCl KCl ZnCl2 KMnO4 一般现在时、现在进行时、一般将来时、一般过去时专项练习
一 单项选择题
1. _____ he _____ to the park at 6:30 in the morning? No, he ____. A. Does; goes; does B. Does; go; doesn’t C. Does; go; does 2. What colour _____ you _____ this bookcase? I _____ it pink.
A. are; going to paint; am going to paint B. do; paint; paint C. did; paint; painted
3. Tim always _____ a picture at home. He _____ a car now. A. draws; is drawing B. draw; draw C. draws; draw
4. She usually _____ her friends. They often _____ tea. A. see; drink B. sees; drinks C. sees; drink
5. He usually _____ the dishes at night, but tonight he _____ clothes.
A. wash; wash B. washes; is going to wash C. is washing; washes
6. Mr. Green usually _____ his newspaper in the evening, but he and his wife _____ television yesterday evening.
A. reads; watches B. reads; is going to watch C. reads; watched
7. Where are the man and the woman? They _____ near the tree. A. sit B. sat C. are sitting
8. _____ your pen pal _____ diving? No, he _____ .He ______ writing stories. A. Does; like; doesn’t; likes B. Does; likes; doesn’t; like C. Do; like; don’t; likes
9. _____ you _____ fishing yesterday? No, we _____ .A. Does; go; doesn’t B. Did; go; didn’t C. Do; go; don’t
10. Open the window, please. Look! He _____ it A. opens B. is openning C. is opening 11. I usually _____ some milk every day. But I _____ coffee yesterday. A. drink; drank B. is drinking; drink C. drank; am drinking
12. Mr. Green often _____ his newspapers at night. But he _____ an interesting book tonight. A. reads; reads B. reads; read C. reads; is going to read
13. The old man _____ playing sports in the park. He _____ morning exercise now. A. likes; is doing B. likes; does C. like; doing
14. What _____ you usually _____ in the evening? I ______ computer games. What _____ you _____ last night? I _____ a book.
A. do; do; play B. did; do; played C. does; do; plays did; do; read do; do; read do; do; am reading 15. Where ______ the boy _____? He _____ across the river now.
A. does; swim; swims B. is; swimming; is swimming C. is; swimming; is swimming
16. _____ you _____ to music now? Yes, we _____. A. Do; listen; do B. Did; listen; did C. Are; listening; are
17. Put on you coat, please. OK. I ______ it on. A. am putting B. am going to put C. put 18. _____ you ______ coffee? Yes, I ______. A. Do; like; do B. Did; like; did C. Are; like; am
19. Look! Two cats ______ across the wall. A. run B. runs C. are running 20. She _____ tea, but he _____. A. likes; doesn’t B; like; don’t C. like; doesn’t
21. If it ________ tomorrow, we’ll go roller-skating. A. isn’t rain B. won’t rain C. doesn’t rain D. doesn’t fine
22. Jenny ____ in an office. Her parents ____in a hospital
A work; works B works; work C work; are working D is working; work 23. ----I don’t know if his uncle _____. ---- I think he _____ if it doesn’t rain.
A will come; comes B will come; will come C comes; comes D comes; will come
24. There _____ a meeting tomorrow afternoon. A. will be going to B. will going to be C. is going to be
二 用动词的正确形式填空
1. He often (have) dinner at home. 2. It is very cold these days. It （snow）soon. 3．Tom and Mary (come) to China last month.
初中常见相对原子质量及相对分子质量资料
