篇一 :分析天平的使用实验报告

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N縱_c剉/f饄蠎豽(W/e秅 Nb?? ?饄蠎豽 Tc(W/e秅 Nb梽v:N N縱_0顅MRO(u儚:N^踠剉/f N縱_5uP[)Ys^0</span></p> <p class=p0 style='text-indent:21.0pt'><span lang=EN-US style='font-size:10.5pt; font-family:媅SO'>FAlOO4</span><span style='font-size:10.5pt;font-family:媅SO'>媁5uP[)Ys^Yb_觺刧俌㑇@b:y0<span lang=EN-US>1</span>N.曍v<span lang=EN-US>(</span>6Rg<span lang=EN-US>)</span>?<span lang=EN-US> 2</span>N>f:yhV?<span lang=EN-US> 3</span>N豽Xb?<span lang=EN-US>4</span>N饄豽?<span lang=EN-US> 5</span>N4ls^闚?<span lang=EN-US> 6</span>N4ls^寕??</span></p> <p class=p0 style='text-indent:20.0pt'><img width=283 height=156 src="index.files/image001.png" align=left hspace=12><span lang=EN-US style='font-size:10.5pt;font-family:媅SO'>(1)FAlOO4</span><span style='font-size: 10.5pt;font-family:媅SO'>媁;N亯?b/gch</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>饄蠎凈V?<span lang=EN-US>0</span>^?<span lang=EN-US>lOOg</span></span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>麐pe緗?<span lang=EN-US>0.lmg</span></span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>畍蛻饄蠎凈V<span lang=EN-US> (</span>螿<span lang=EN-US>)</span>?<span lang=EN-US>0</span>^?<span lang=EN-US>lOOg</span></span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>峇皊'`<span lang=EN-US>(</span>h芉OP頬<span lang=EN-US>)</span>?<span lang=EN-US>0.OOO2g</span></span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>縹'`飲頬??<span lang=EN-US> 0.OOO5g</span></span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>3z歔鰁魰?<span lang=EN-US>d"6s</span></span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>陙!hxx蠎 lOOg</span></span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>_:g剺韕鰁魰?<span lang=EN-US>l20min. </span></span></p> <p class=p0 style='text-indent:21.0pt'><span lang=EN-US style='font-size:10.5pt; font-family:媅SO'>(2)</span><span style='font-size:10.5pt;font-family:媅SO'>5uP[)Ys^剉蚫\O</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>(WO(uMR聣遊4ls^闚0俌4ls^闚4l醠OP鹹 ??宼e4ls^寕?? ?O4l醠MO嶯4ls^闚-N胈0</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>.曍v剉蚫\O烺齹?</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>`$<span lang=EN-US>ON</span>_/T>f:yhV.?</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>闟亯{? cN N<span lang=EN-US>ON</span>.? ?>f:yhVhQ甆?鵞>f:yhV剉烺齹蹚L埨h錱 ?<span lang=EN-US>2s</span>T ?>f:y)Ys^剉媁鱏?6qT/f饄蠎!j_0</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>a$<span lang=EN-US>OFF</span>sQ頃>f:yhV.?</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>{? c<span lang=EN-US>OFF</span>.? ?>f:yhV剄mpsS颯0鍌儚曵e魰 N峇O(u)Ys^ ?擽鑒籗5u恘縹0</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>b$<span lang=EN-US>TAR</span>n鰱0籗畍.?</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>n筟hV嶯饄豽 N ?>f:y鶴筟hV剉(嵪??6qT{? c<span lang=EN-US>TAR</span>.? ?>f:y坢悥 ?彇sS鶴皊hQ鰱秗` ?筟hV(嵪?>f:y TAR,</span>>f:yhV:NhQ鰱 ?sS)Ys^n鰱0</span></p> <p class=p0 style='text-indent:21.0pt'><span lang=EN-US style='font-size:10.5pt; font-family:媅SO'>&nbsp;</span></p> <p class=MsoListParagraph style='text-indent:0cm;line-height:18.0pt;layout-grid-mode: char;text-autospace:none'><span style='font-size:10.5pt'> N0瀃寶蚫\Oek</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>1.</span><span style='font-size:10.5pt'>O(uek?</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>(1)</span><span style='font-size:10.5pt'>錱 w4ls^闚 ?俌 N4ls^ ?亯惽?4ls^寕??岓?4ls^0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>(2)</span><span style='font-size:10.5pt'>?5u恘 ?剺韕<span lang=EN-US>30min</span>T ?筫颯_/T>f:yhV蹚L埻d\O0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>(3)</span><span style='font-size:10.5pt'>{? c<span lang=EN-US>ON</span>>f:y.?T ?鶴皊<span lang=EN-US>0.OOOOg</span>饄蠎!j_T筫颯饄蠎0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>(4)</span><span style='font-size:10.5pt'>\饄蠎ir{?>e(W饄豽-N.Y ?卂>f:yhV NpeW[3z歔T鶴皊(嵪慤SMO<span lang=EN-US>g,</span>sS颯麐pe ?v^皨U_饄蠎觺済0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>2.</span><span style='font-size:10.5pt'>饄蠎筫誰?</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>(1)</span><span style='font-size:10.5pt'>鶹歔饄蠎誰<span lang=EN-US>(</span>蟢齆饄諷體駛x<span lang=EN-US>0.5000g)</span>?</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span style='font-size:10.5pt'>諷Nr^繯h坆椏v ?>eeQ5uP[)Ys^匭 ?卂>f:y芉nx(嵪?T ? c<span lang=EN-US>TAR(</span>n鰱.?<span lang=EN-US>)</span>T ?魐(u[r覊STh坆椏v-Nbaba燫7h ?髞)Ys^O\U^ N>f:y<span lang=EN-US>0.5000g</span>0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>(2)</span><span style='font-size:10.5pt'>愊Q饄蠎誰<span lang=EN-US>(</span>饄諷<span lang=EN-US>0.3-0.4g</span>體駛x$N齆<span lang=EN-US>)</span></span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span style='font-size:10.5pt'>`$(u鋘竳ag諷$N*Nr^繯\鏿og ?鱏R+R:N<span lang=EN-US>1</span>0<span lang=EN-US>2,</span>R+R(WR恎)Ys^ N芉nx饄蛻 ?zz鏿og(嵪懓?:N<span lang=EN-US>m<sub>0</sub></span>孴<span lang=EN-US>m<sub>1</sub></span>0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span style='font-size:10.5pt'>a$(u鋘竳ag諷Nr^繯剉饄蠎鰐 ?燫eQ<span lang=EN-US>1g</span>體駛x墊+g<span lang=EN-US>,</span>(WR恎)Ys^ N芉nx饄蛻<span lang=EN-US>(</span>芉nx髞<span lang=EN-US>0.lmg),</span>皨 NvQ(嵪?:N<span lang=EN-US>m<sub>2</sub></span>KQ0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span style='font-size:10.5pt'>b$(uN\ag鋘竳WY(W饄蠎鰐 N ?諷鶴饄蠎鰐T ?峇(uN\Gr鋘竳SOO鰐講 ?\饄蠎鰐Sb_ ?(u講{弡弐e鸔饄蠎鰐 ?l忹y體駛x<span lang=EN-US>0.3</span>^?<span lang=EN-US>0.4g</span>嶯\鏿og<span lang=EN-US>1</span>-N ?v^芉nx饄鶴饄蠎鰐孴iRYO體駛x螿\(嵪?:N<span lang=EN-US>m<sub>3</sub></span>KQ ?錘 T7h筫誰l忹y諎7h<span lang=EN-US>0.3</span>^?<span lang=EN-US>0.4g</span>嶯\鏿og<span lang=EN-US>2</span>-N ?峇芉nx饄鶴饄蠎鰐孴iRYO諎7h剉螿\(嵪?:N<span lang=EN-US>m<sub>4</sub></span>KQ0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span style='font-size:10.5pt'>c$芉nx饄鶴$N*N鏿og燫諎7h剉(嵪? ?R+R:N<span lang=EN-US>m<sub>5</sub></span>孴<span lang=EN-US>m<sub>6</sub></span>KQ0</span></p> <p class=MsoListParagraph style='line-height:18.0pt;layout-grid-mode:char; text-autospace:none'><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>踁0瀃寶penc皨U_0pencYt</span></p> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>?</span><span lang=EN-US style='font-size:10.5pt'>1</span><span style='font-size:10.5pt;font-family:媅SO'> ?鶹歔饄蠎誰皨U_h? </p> <table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 style='border-collapse:collapse;border:none'> <tr> <td width=284 valign=top style='width:213.05pt;border:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>!kpe</span></p> </td> <td width=284 valign=top style='width:213.05pt;border:solid windowtext 1.0pt; border-left:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>諎7h蛻?</span><span lang=EN-US style='font-size:10.5pt'>g</span><span style='font-size:10.5pt; font-family:媅SO'> ?</span></p> </td> </tr> <tr> <td width=284 valign=top style='width:213.05pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>1</span></p> </td> <td width=284 valign=top style='width:213.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> </tr> <tr> <td width=284 valign=top style='width:213.05pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>2</span></p> </td> <td width=284 valign=top style='width:213.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> </tr> </table> <p class=p0 style='text-indent:21.0pt'><span style='font-size:10.5pt; font-family:媅SO'>?</span><span lang=EN-US style='font-size:10.5pt'>2</span><span style='font-size:10.5pt;font-family:媅SO'> ?愊Q饄蠎誰皨U_h? </p> <table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 style='border-collapse:collapse;border:none'> <tr> <td width=189 valign=top style='width:142.0pt;border:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>饄蠎鱏</span></p> </td> <td width=189 valign=top style='width:142.05pt;border:solid windowtext 1.0pt; border-left:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>1</span></p> </td> <td width=189 valign=top style='width:142.05pt;border:solid windowtext 1.0pt; border-left:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>2</span></p> </td> </tr> <tr> <td width=189 valign=top style='width:142.0pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>zz\鏿og蛻</span><span lang=EN-US style='font-size:10.5pt'>(g)</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; 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border-top:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>re鶴諎7h蛻</span><span lang=EN-US style='font-size:10.5pt'>(g)</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> </tr> <tr> <td width=189 valign=top style='width:142.0pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>鏿og</span><span lang=EN-US style='font-size:10.5pt'>+</span><span style='font-size:10.5pt; font-family:媅SO'>諎7h蛻</span><span lang=EN-US style='font-size:10.5pt'>(g)</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> </tr> <tr> <td width=189 valign=top style='width:142.0pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>饄諷諎7h蛻</span><span lang=EN-US style='font-size:10.5pt'>(g)</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> </tr> <tr> <td width=189 valign=top style='width:142.0pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>輣鵞頬 <span lang=EN-US style='font-size:10.5pt'>(g)</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> <td width=189 valign=top style='width:142.05pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=p0><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </td> </tr> </table> <p class=p0><span lang=EN-US style='font-size:10.5pt;font-family:媅SO'>&nbsp;</span></p> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>擭0觺簨</span></p> <p class=p0 style='text-indent:21.0pt'><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> <p class=p0><span style='font-size:10.5pt;font-family:媅SO'>mQ0顣槝孴▼簨</span></p> <p class=p0 align=right style='margin-left:147.0pt;text-align:right;text-indent: 21.0pt;text-autospace:ideograph-other'><span lang=EN-US style='font-size:10.5pt'>&nbsp;</span></p> </div> </body> </html>

篇二 :实验一 分析天平的使用

实验1  分析天平的称量练习

分析天平是定量分析中重要而又常用的精密仪器之一。常用的分析天平最大负载为200g,分度值(感量)为0.1mg。实验室常用的是半自动电光天平(例如,TG-328B型半自动电光天平)。电光天平可直接读取0.1mg,故又称万分之一分析天平。

一、实验目的

掌握电光天平的结构、使用规则和称量方法。

二、称量时的基本要求

1.       称量前应使用天平箱内部清洁、环码挂在固定的钩上、天平保持水平等,否则需用软毛刷清扫和做必要的调节。然后测定天平零点。

2.       加重或加重时,必须先把天平梁托起(天平休止)。

3.       砝码必须用砝码镊子夹取,且要轻拿轻放。砝码放在右侧天平盘上。加减环码时应一档一档地转动环码旋钮,防止跳落或串位。

4.       称量和读取数值时,必须关上天平门。

5.       化学试剂或是的物体必须放入小烧瓶或称量瓶中称重。放在左侧天平盘上。过热或过冷的物体应在天平室内干燥器中放置15~30min后再称量。吸湿性或挥发性的物质,须放在密闭容器中称量。

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篇三 :实验四 分析天平称量练习 实验报告参考

实验教案  实验四   分析天平称量练习

一、   实验目的

1.掌握直接称量法、固定质量称量法和递减称量法。

  2. 练习并熟练掌握分析天平的基本操作和常用称量方法。

 3  .培养准确,整齐,简明记录实验原始数据的习惯。

二、  实验用品

托盘天平;半机械加码电光分析天平;电子天平;表面皿;称量瓶;纸条;烧杯等。

三、实验原理

 (一)分析天平的称量方法

分析天平的称量方法一般有直接称量法,固定质量称量法和递减称量法三种。

1  接称量法(又称直接法)

该法一般用于称量某一不吸水、在空气中性质稳定的固体(如坩锅、金属、矿石等)准确质量。称量时,将被称量物直接放入分析天平中,称出其准确质量。

2  定质量称量法

该法一般用于称取某一固定质量的试样(一般为液体或固体的极细粉末,且不吸水,在空气中性质稳定)。称量时先在分析天平上称出干净且干燥的器皿(一般为烧杯、坩锅、表面皿等)的准确质量,再将分析天平增加固定质量的砝码后,往天平的器皿中加入略少于固定质量的试样,再轻轻震动药匙使试样慢慢撒入器皿中,直至其达应称质量的平衡点为止。

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篇四 :分析天平实验测试报告

评分标准:

1、分析天平水平、零点调节正确,灵敏度调节达到要求;(20分)

2、物理天平、分析天平使用正确,数据记录无误;(20分)

3、数据处理正确;(40分)

4、问答题答案要点(20分):

(1)用分析天平测物体的质量前,要对待测物体进行粗测。

(2)天平调节以及测量过程中要注意随手关玻璃门。

    (3)只有当判断天平哪一侧较重时,才旋转止动旋钮到底支起横梁,并在判明后慢慢将其止动。不能在横梁支起时打开玻璃门对天平进行操作加减砝码、钩码或取放物体。

    (4)称衡时,被测物体放在左盘,右盘上加砝码。根据待测物体的粗测质量,加适当的钩码和砝码,支起天平,判明轻重后再调整钩码和砝码。调整钩码和砝码依照从重到轻的顺序。

    (5)转动钩码旋钮时,避免用力过猛。取放砝码时要用镊子,用过的砝码要直接放到砝码盒中原来的位置。

(6)称衡后,要检查横梁是否已落下,钩码是否完全吊起,砝码是否完全放入砝码盒中原来的位置,玻璃门是否关上。

分析天平实验测试报告

小球的粗测质量mo =                g.

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篇五 :高老师自用教案分析天平称量练习 有实验报告模板

实验教案  实验四   分析天平称量练习

一、   实验目的

1.掌握直接称量法、固定质量称量法和递减称量法。

  2. 练习并熟练掌握分析天平的基本操作和常用称量方法。

 3  .培养准确,整齐,简明记录实验原始数据的习惯。

二、  实验用品

托盘天平;半机械加码电光分析天平;电子天平;表面皿;称量瓶;纸条;烧杯等。

提问:

一、分析天平的构造

(1)   最重要的是天平梁,天平梁上有什么?玛瑙刀,有几个,方向,还有平衡调节螺丝;

(2)   指针:偏向左说明那个重?

(3)   升降枢:开关,打开,天平梁放下,电源开,灯亮。两种状态。“半开”还是“全开”状态

(4)   吊耳:玛瑙平板和,挂钩、托蹬

(5)   秤盘:左边、右边

(6)   砝码和圈码:圈码的质量:10mg -990mg

1000mg,也说是1g 以上如何读?10mg以下如何?

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篇六 :实验一 分析天平的称量和滴定分析操作练习

湖北工程学院 化学与材料科学学院 分析实验报告(2013)

实验一 分析天平的称量和滴定分析操作练习

(学号:012301314211 姓名:何艳 指导教师:夏彩芬 实验日期:20xx年9月11日)

摘要(Abstracts):为了熟悉电子天平的原理和使用原则,学习其基本操作和常用称量方法,本实验通过观摩老师操作及自己练习来较 为全面的掌握电子天平的使用;为了学习滴定分析常用仪器的洗涤和正确使用方法,确定以甲基橙为指示剂的滴定终点,本实验以盐酸滴定氢氧化钠溶液为基础来练习滴定操作。

In order to be familiar with electronic balance principle and the use of the principle, study its basic operation and common weighing method, this experiment by watching the teacher operation and their practice to a more comprehensive grasp the use of electronic balance. In order to study the titration analysis commonly used instruments of washing and used correctly.Method, methyl orange as the indicator of titration end point, the experiment on the basis of hydrochloric acid titration sodium hydroxide solution to practice titration.

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篇七 :高老师基础化学实验教案 有报告模板 台秤和分析天平的使用

实验三  台称及分析天平的使用方法

预习提要:

预习内容p19~p29,p58~p59。

1、目前国内应用最广泛的天平有哪些?

2、了解等背臂双盘电光天平的构造?

3、加减砝码的原则是什么?如何判断天平两盘的轻重?

4、理解下列名词:天平的零点、灵敏度、分度值、平衡点、停点、示值变动性。

5、天平的质量检验有哪几项?如何检验?

6、什么是零点和平衡点?如何调节天平的零点?

7、测定天平灵敏度的步骤是什么?

8、掌握分析天平的使用规则。

9、使用分析天平称量前,应做哪些准备工作?

10、在使用分析天平时,你准备如何保护天平的玛瑙刀口?

11、什么是天平的稳定性、灵敏性、示值变动性和不等臂性?

12、使用中的分析天平,应具有怎样的稳定性和灵敏性?

13、TG-328A型和B型天平的主要不用之处有那些?

14、为什么在称量时,只准开天平箱的侧门而不能开前门?如读数时,没有关天平门时有什么影响?

15、称量的规则有哪些,有哪几条为保护玛瑙刀刃而规定的?

16、如何使用称量瓶、干燥器的。

17、称量前应如何检查天平?

18、在试重过程中要注意什么?

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篇八 :分析化学实验报告

基础化学实验(二)


面 向 21 世 纪 课 程 教 材

  第三版

 

华中师范大学

东北师范大学

陕西师范大学

北京师范大学

高等教育出版社

分析化学实验

Analytic Chemistry Experiments

  安全教育及课程要求

一、安全知识

一)对分析仪器的使用要求

1.实验所使用的玻璃仪器按清单清点后为一人一套,如有损坏,应按价赔偿。

2.实验中所使用的精密仪器应严格按操作规程使用,使用完后应拔去插头,仪器各旋钮恢复至原位,在仪器使用记录本上签名并记录其状态。

3.实验时应节约用水、用电,实验器材一律不得私自带离实验室。

二)、对试剂药品的使用要求

1.实验室内禁止饮食、吸烟,不能以实验容器代替水杯,餐具使用,防止试剂入口,实验结束后应洗手。

2.使用As2O3、HgCl2等剧毒品时要特别小心,用过的废物、废液不可乱倒,应回收或加以特殊处理。

3.使用浓酸、浓碱或其他具有强烈腐蚀性的试剂时,操作要小心,防止溅伤和腐蚀皮肤、衣物等。对易挥发的有毒或有强烈腐蚀性的液体或气体,应在通风橱中操作。

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