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9. 氧化銅和稀硫酸反應(yīng):CuO + H2SO4 == CuSO4 + H2O (3)酸 + 堿 鹽 + 水(中和反應(yīng)) 60.鹽酸和燒堿起反應(yīng):HCl + NaOH == NaCl +H2O 61. 鹽酸和氫氧化鈣反應(yīng):2HCl + Ca(OH)2 == CaCl2 + 2H2O 62. 氫氧化鋁藥物治療胃酸過(guò)多:3HCl + Al(OH)3 == AlCl3 + 3H2O 63. 硫酸和燒堿反應(yīng):H2SO4 + 2NaOH == Na2SO4 + 2H2O (4)酸 + 鹽 另一種酸 + 另一種鹽 64.大理石與稀鹽酸反應(yīng):CaCO3 + 2HCl == CaCl2 + H2O + CO2↑ 65.碳酸鈉與稀鹽酸反應(yīng): Na2CO3 + 2HCl == 2NaCl + H2O + CO2↑ 66.碳酸氫鈉與稀鹽酸反應(yīng):NaHCO3 + HCl== NaCl + H2O + CO2↑ 67. 硫酸和氯化鋇溶液反應(yīng):H2SO4 + BaCl2 == BaSO4 ↓+ 2HCl 堿的化學(xué)性質(zhì) (1) 堿 + 非金屬氧化物 鹽 + 水 68.苛性鈉暴露在空氣中變質(zhì):2NaOH + CO2 == Na2CO3 + H2O 69.苛性鈉吸收二氧化硫氣體:2NaOH + SO2 == Na2SO3 + H2O 71.消石灰放在空氣中變質(zhì):Ca(OH)2 + CO2 == CaCO3 ↓+ H2O 72. 消石灰吸收二氧化硫:Ca(OH)2 + SO2 == CaSO3 ↓+ H2O (2)堿 + 酸 鹽 + 水(中和反應(yīng),方程式見(jiàn)上) (3)堿 + 鹽 另一種堿 + 另一種鹽 73. 氫氧化鈣與碳酸鈉:Ca(OH)2 + Na2CO3 == CaO3↓+ 2NaOH 鹽的化學(xué)性質(zhì) (1)鹽(溶液) + 金屬單質(zhì) 另一種金屬 + 另一種鹽 74. 鐵和硫酸銅溶液反應(yīng):Fe + CuSO4 == FeSO4 + Cu (2)鹽 + 酸 另一種酸 + 另一種鹽 75.碳酸鈉與稀鹽酸反應(yīng): Na2CO3 + 2HCl == 2NaCl + H2O + CO2↑ 碳酸氫鈉與稀鹽酸反應(yīng):NaHCO3 + HCl== NaCl + H2O + CO2↑ (3)鹽 + 堿 另一種堿 + 另一種鹽 76. 氫氧化鈣與碳酸鈉:Ca(OH)2 + Na2CO3 == CaCO3↓+ 2NaOH (4)鹽 + 鹽 兩種新鹽 77.氯化鈉溶液和硝酸銀溶液:NaCl + AgNO3 == AgCl↓ + NaNO3 78.硫酸鈉和氯化鋇:Na2SO4 + BaCl2 == BaSO4↓ + 2NaCl 其它: 79.H2SO4+Ca(OH)2===CaSO4+2H2O 80.CaCO3+CO2+H2O===Ca(HCO3)2 81. Ca(HCO3)2====CaCO3↓+CO2+H2O 82. Fe2O3+6HCl==2FeCl3+3H2O 83. H2SO4+Fe2O3===Fe2(SO4)3+3H2O 84. 2NaOH+SO3===Na2SO4+H2O +Ca(OH)2====CaSO4↓+2H2O今天,在這家長(zhǎng)會(huì)上,我要為自己的中考下個(gè)目標(biāo)。 示重法:F浮=GF液 用彈簧測(cè)力計(jì)分別測(cè)出物體在空氣中的示數(shù)G,物體浸在液體中時(shí)的示數(shù)F液。It was the poor boy that we gave the books to.What for? Where to? Who with?(4)不及物動(dòng)詞的不定式修飾表“涉及對(duì)象、場(chǎng)合、工具、方式、材料”等意義的名詞時(shí)常帶吊尾介詞。不定式“to stand + 介詞”作定語(yǔ)修飾a tall box,其中被修飾詞在邏輯意義上是不及物動(dòng)詞,只有加上吊尾介詞,句子意思才完整。本題考查并列連詞or、for、but和從屬連詞的意義和用法。本題考查with的復(fù)合結(jié)構(gòu)作狀語(yǔ)的用法。本題考查句子結(jié)構(gòu)中介詞of的有法。若將hardly或no sooner放在句首,句子要倒裝。though還可以與別的詞結(jié)合使用,如even though、as though,而although則不能這樣搭配。如:I worked till late at ,則主句要用否定形式,意為動(dòng)作“到……才……”開(kāi)始發(fā)生。如:, as well as his wife and children, has e to Nanjing for a visit.not only … but also結(jié)構(gòu)中的not only可用于句首,連接兩個(gè)分句時(shí),第一個(gè)從句主謂要倒裝。①both … and, either … or, neither … norboth … and“雙方都”,連接句子的兩個(gè)主語(yǔ)時(shí),其后謂語(yǔ)動(dòng)詞通常用使用復(fù)數(shù)形式。Nothing can prevent me(from)doing the job.She spent nearly two hours(in)translating it.(14)某些名詞與介詞構(gòu)成的固定搭配。如:I stayed with her all he morning.(B)表示一段時(shí)間的短語(yǔ)之前,for可以省略,也可以不省略。在next、last、yesterday、tomorrow、each、one、any、every、all等詞之前,可以省略,也可以不省略。The children went home at once after school.They went to bed after they had finished the job.②in、on、along、down、up、after、before、along、beyond等介詞可兼作副詞。這里所說(shuō)的不定式復(fù)合結(jié)構(gòu)形式指的是for 或of加上人或事,作動(dòng)詞不定式邏輯主語(yǔ)的結(jié)構(gòu)。如:Ann is between Tom and Bill.Switzer land lies between France, Germany, Australia and Italy.They soon finished the work between themselves.(共同,合作)She was busy between cooking, washing, sewing and looking after the baby.(表示接連不斷地,一個(gè)接一個(gè)地忙這忙那)A horse can be seen between trees now.among表示三者以上之間。All but one are here.Nobody but I likes making model ships.②后接不定式短語(yǔ)為排除對(duì)象時(shí),多用but。We all went except ,約翰沒(méi)有。①besides 除……以外,(還有)。②表泛指的方式、手段by post/mail郵寄,by telephone(radio),但on the phone/on the radio/on TV(電訊器材),by electricity用電,by machinery用電器,by hard work,learn heart,through the satellite,through practice,through his own efforts,through experience,through the telescop③交通工具類(lèi)by bus/train/car/taxi(road)by bike/bicycle,on horse back/on footby plane/jet/spaceship,by airby ship/boat/lifeboat,by sea/by water另外:by means of 用……方法,by way of 經(jīng)由,取道于,用……方法,with the help (permission)of sb./with sb.’s help (permission)。如:They walked across the playground.I walked through the forest.⑤over / under / above / below。若A地屬于B地,用in。The doctor will be with us in six minutes.She graduated in 1981,and eight years later she became the manager of the factory.He received her letter after four weeks.另外,in + 一段時(shí)間 + ’s + time 與 within + 一段時(shí)間的用法如下:in a week’s time = in a weekThey will arrive in three days’ time.(與將來(lái)時(shí)連用)My brother’s birthday is in two weeks’ time.(作表語(yǔ))I’ll fi