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id="ddhxvffh" class="excellent_star">推薦度：<i></i></span> </a></li> <li id="ddhxvffh" class="excellent_articles_title">相關(guān)推薦</li> </ul> </div> <p>初中化學(xué)說(shuō)課稿-《我們周?chē)諝狻?/p> <p>　　作為一位兢兢業(yè)業(yè)的人民教師，有必要進(jìn)行細致的說(shuō)課稿準備工作，說(shuō)課稿有助于提高教師的語(yǔ)言表達能力。怎么樣才能寫(xiě)出優(yōu)秀的說(shuō)課稿呢？下面是小編為大家整理的初中化學(xué)說(shuō)課稿-《我們周?chē)諝狻�，歡迎大家分享。</p><p style="text-align: center;"><img loading="lazy" src="https://p.9136.com/00/l/bbafd1a710_5fbf7ec079247.jpg" alt="初中化學(xué)說(shuō)課稿-《我們周?chē)諝狻?/></p> <p><strong>　　一、說(shuō)單元教材地位和作用</strong></p><p>　　《我們周?chē)目諝狻肥蔷拍昙壣蟽缘诙䥺卧膬热�。本單元包括三個(gè)課題，分別是空氣、氧氣和制取氧氣�？諝夂脱鯕馐亲匀唤缇S持生態(tài)平衡的條件，是化工生產(chǎn)的廉價(jià)資源，它與人類(lèi)生活關(guān)系最為密切。當前空氣污染是全世界的三大問(wèn)題之一，因此本單元內容是歷年中考的重點(diǎn)之一。近年來(lái)中考以空氣中氧氣含量的測定、氧氣性質(zhì)實(shí)驗、氧氣制取的原理和操作為核心，考查觀(guān)察能力、描述能力以及實(shí)驗探究能力，還聯(lián)系各地空氣污染的問(wèn)題考查分析問(wèn)題、解決問(wèn)題的能力。</p><p><strong>　　二、說(shuō)教學(xué)目標</strong></p><p>　�。ㄒ唬┲R與技能</p><p>　　1、了解空氣的主要成分及主要物理性質(zhì)和用途</p><p>　　2、認識純凈物與混合物的概念并應用</p><p>　　3、了解氧氣的物理性質(zhì)并通過(guò)與許多物質(zhì)反應認識其化學(xué)性質(zhì)比較活潑</p><p>　　4、了解實(shí)驗室和工業(yè)上制取氧氣的原理的不同；</p><p>　　5、知道實(shí)驗室制取氧氣的藥品、原理、裝置、操作、氣體收集及方案選擇；</p><p>　　6、認識化合反應、分解反應、催化劑和催化作用</p><p>　�。ǘ┻^(guò)程與方法</p><p>　　1、通過(guò)“測定空氣中氧氣含量”實(shí)驗，學(xué)會(huì )分析實(shí)驗結果的誤差原因</p><p>　　2、通過(guò)制氧方案的比較、鑒別，學(xué)會(huì )選擇最佳原料、條件、原理、裝置</p><p>　�。ㄈ┣楦�、態(tài)度與價(jià)值觀(guān)</p><p>　　1、通過(guò)當今世界的三大環(huán)境問(wèn)題、空氣的污染源、嚴重危害及防治，培養熱愛(ài)自然關(guān)注環(huán)境的情感；</p><p>　　2、通過(guò)對制取氧氣的實(shí)驗的探究，增強學(xué)生的探究欲。</p><p><strong>　　三、說(shuō)重難點(diǎn)</strong></p><p>　　重點(diǎn)：空氣的組成、各成分的用途、氧氣的含量及空氣的污染與防治。氧氣的化學(xué)性質(zhì)。氧氣的實(shí)驗室制法。</p><p>　　難點(diǎn)：測定空氣中氧氣含量的實(shí)驗原理、裝置及產(chǎn)生誤差的原因�；戏磻c氧化反應的關(guān)系。催化劑的概念。</p><p>　　難點(diǎn)突破：測定空氣中氧氣含量，要組織學(xué)生觀(guān)察討論分析從而理解整個(gè)實(shí)驗的意圖原理，并感悟到化學(xué)實(shí)驗要得出正確結論必須注意每一個(gè)細節的正確。</p><p>　　中考考點(diǎn)和題型</p><p>　　本單元常以選擇題、填空題和綜合應用題等形式出現，多考察氣體的'制取及空氣污染與防治、日常生活中常見(jiàn)的性質(zhì)和用途等作為切入點(diǎn)進(jìn)行考查。</p><p><strong>　　四、教學(xué)方法</strong></p><p>　　用師生互動(dòng)啟發(fā)式、討論式、參與式、等方法培養學(xué)生自我回憶知識和應用知識的能力。講授法多媒體課件</p><p><strong>　　五、說(shuō)教學(xué)過(guò)程:</strong></p><p>　　在這節課的教學(xué)過(guò)程中，我注重本節內容的連接性、條理性，教學(xué)中盡可能最大限度地調動(dòng)學(xué)生參與課堂學(xué)習的積極性和主動(dòng)性。</p><p>　　導入用謎語(yǔ)激發(fā)學(xué)生興趣并引入課題——《我們周?chē)目諝狻贰?/p><p>　　通過(guò)幻燈片展示本單元的考點(diǎn)要求。就這三個(gè)考點(diǎn)進(jìn)行講解和分析。</p><p>　　1、以提問(wèn)的形式簡(jiǎn)單的復習了“空氣的組成和氧氣含量測定”引導學(xué)生思考，培養學(xué)生思考問(wèn)題和解決問(wèn)題的能力，突破難點(diǎn)。</p><p>　　2、通過(guò)（倫敦煙霧事件）回顧空氣的污染和防止。</p><p>　　3、通過(guò)視頻回顧幾種物質(zhì)在氧氣中燃燒現象，寫(xiě)出反應原理，總結出氧氣的物理、化學(xué)性質(zhì)。</p><p>　　4、回顧氧氣的工業(yè)制法：分離液態(tài)空氣（利用沸點(diǎn)不同）。通個(gè)視頻再現氧氣實(shí)驗室制法啟發(fā)學(xué)生思考，制取步驟、注意事項、引出固固裝置和固液裝置，通過(guò)對氧氣收集裝置的分析，學(xué)會(huì 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