人教版九級化學下第九單元 溶液課題1溶液的形成和變化教學課件共22張

1、溶液的形成和變化,溶液形成和變化實驗記錄表,序,號,溫,度,溶,液,數(shù),據(jù),分,析,溶劑,水,質(zhì)量,溶質(zhì),氯化,鈉,質(zhì)量,溶液,質(zhì)量,溶液,狀態(tài),1,20,100g,2,20,50g,3,20,150g,4,50,100g,5,50,50g,序,號,溫,度,溶劑,水,質(zhì)量,溶質(zhì),硝酸,鉀,質(zhì)量,溶液,質(zhì)量,溶液,狀態(tài),6,20,100g,7,20,50g,質(zhì)量比,溶質(zhì)溶劑,質(zhì)量比,溶質(zhì)溶液,36g,18g,40g,37g,18.5g,136g,68g,190g,137g,68.5g,飽和,飽和,飽和,飽和,飽和,飽和,31.6g,15.8g,65.8g,131.6g,9/25,37/100,3

2、7/100,4/15,不飽和,0.36,9/25,0.36,0.27,0.37,0.37,質(zhì)量比,溶質(zhì)溶劑,質(zhì)量比,溶質(zhì)溶液,29/250,0.32,29/250,0.32,固體溶解度,S,一定溫度下，某固體物,質(zhì)在,100g,溶劑中達到飽和狀,態(tài)時所溶解,的質(zhì)量,通常是,水,例如,20,時,KNO,3,的溶解度是,31.6g,溶,解,度,g,200,100,60,70,50,10,20,30,40,80,90,100,110,180,170,160,150,140,130,120,190,50,10,20,30,40,0,90,60,70,80,溫度,硝,酸,鉀,溫,度,0,10,20,30

3、,40,50,60,70,80,90,100,溶,解,度,g,硝酸鉀在不同溫度時的溶解度,13.3,31.6,20.9,45.8,63.9,85.5,110,138,168,202,246,溶解度的表示方法,溶解度曲線,Ca(OH,2,的溶解度曲線,小結(jié),實驗數(shù)據(jù)分析、處理方法,實驗數(shù)據(jù)分析、處理,溶解度,控制變量的思想,溶解度表和溶解度曲線的應(yīng)用,246,202,168,138,110,85.5,63.9,45.8,31.6,20.9,13.3,KNO,3,溶解,度,g,100,90,80,70,60,50,40,30,20,10,0,溫度,配制,20,的,KNO,3,飽和溶液,1,飽和溶液

4、質(zhì)量不限,2,用,20g KNO,3,固體配制一定量的飽和溶液,246,202,168,138,110,85.5,63.9,45.8,31.6,20.9,13.3,KNO,3,溶解,度,g,100,90,80,70,60,50,40,30,20,10,0,溫度,判斷溶液是否飽和,246,202,168,138,110,85.5,63.9,45.8,31.6,20.9,13.3,KNO,3,溶解,度,g,100,90,80,70,60,50,40,30,20,10,0,溫度,20,時，把,10gKNO,3,固體放在,40g,水中充分攪拌,不飽和溶液,不飽和溶液,飽和溶液,加,KNO,3,蒸發(fā)水,

5、246,202,168,138,110,85.5,63.9,45.8,31.6,20.9,13.3,KNO,3,溶解,度,g,100,90,80,70,60,50,40,30,20,10,0,溫度,20,時，把,10gKNO,3,固體放在,40g,水中充分攪拌,溶,解,度,g,200,100,60,70,50,10,20,30,40,80,90,100,110,180,170,160,150,140,130,120,190,50,10,20,30,40,0,90,60,70,80,溫度,硝,酸,鉀,以,KNO,3,為例,不飽和溶液,飽和溶液,蒸發(fā)溶劑,增加溶質(zhì),降低溫度,演示實驗：硝酸鉀飽和溶液降低溫度,結(jié)晶,母液,從溶液中分離出溶質(zhì)的方法,降溫結(jié)晶,濃度,溫度,蒸發(fā)結(jié)晶,以,KNO,3,為例,不飽和溶液,飽和溶液,蒸發(fā)溶劑,增加溶質(zhì),降低溫度,結(jié)晶,蒸發(fā)溶劑,降低溫度,不飽和溶液,飽和溶液,結(jié)晶,小結(jié),用溶解度來定量的分析溶液的,形成和變化的過程,理解數(shù)據(jù)信息表達方式的意義,選擇恰當?shù)男畔⒎治鋈芤旱男纬?和變化,溶,解,度,表,比值關(guān)系,溶解度曲線：變化趨勢,總結(jié),1,用溶解