九年级化学上册第1章开启化学之门第3节怎样学习和研究化学药品的取用素材沪教版.ppt

上传人:bowdiet140 文档编号:1158095 上传时间:2019-05-11 格式:PPT 页数:12 大小:1.58MB
下载 相关 举报
九年级化学上册第1章开启化学之门第3节怎样学习和研究化学药品的取用素材沪教版.ppt_第1页
第1页 / 共12页
九年级化学上册第1章开启化学之门第3节怎样学习和研究化学药品的取用素材沪教版.ppt_第2页
第2页 / 共12页
九年级化学上册第1章开启化学之门第3节怎样学习和研究化学药品的取用素材沪教版.ppt_第3页
第3页 / 共12页
九年级化学上册第1章开启化学之门第3节怎样学习和研究化学药品的取用素材沪教版.ppt_第4页
第4页 / 共12页
九年级化学上册第1章开启化学之门第3节怎样学习和研究化学药品的取用素材沪教版.ppt_第5页
第5页 / 共12页
点击查看更多>>
资源描述

药品的取用,化学离不开实验,做到“三不”原则 1.不能用手接触药品; 2.不要把鼻孔凑到容器口去闻药品(特别是气体)的气味; 3.不得尝任何药品的味道。,纸槽,镊子,广口瓶,托盘天平,一横二送三直立,定量取用托盘天平,使用方法:左物右码,M物= M砝码+M游码,准确度:0.1g,注意事项:干燥的药品放在纸上;易潮解的药品必须放在玻璃器皿中称量。,细口瓶,试剂瓶倾倒,量筒/滴定管,胶头滴管,1. 瓶塞倒放在桌上; 2. 标签应对着手心; 3. 试剂瓶口要紧挨着试管口。,吸取和滴加少量试剂滴管的使用胶头滴管,使用方法:,一、捏,二、吸,三、悬空,四、滴加,注意1:用完后要清洗干净,注意2:滴瓶内的滴管不能清洗。,放置:洗刷干净的玻璃仪器要倒立在 试管架或指定的地方晾干。,标准:内壁附着的水既不聚成水滴, 也不成股流下时,成一层均匀的水膜, 表示仪器已洗干净。,关于药品的取用,不正确的操作是( ) A取用粉末状固体药品应用药匙 B取用较大块或颗粒状固体药品用镊子 C实验室没说明用量,一般液体取12mL,固体只要盖满试管底部 D从试剂瓶取出的溶液如果超出了需用量,应将超量的部分倒回原瓶内,D,父母亲为了你们的成长付出了很多,每当他们工作完 回到家时,作为儿女应该倒上杯热开水,送上一片孝 心从化学实验基本操作角度看,你认为倒开水时要 注意哪些问题?,

展开阅读全文
相关资源
猜你喜欢
  • EN 61076-3-114-2009 en Connectors for electronic equipment - Product requirements - Part 3-114 Rectangular connectors - Detail specification for protective housings for use with 8-.pdf EN 61076-3-114-2009 en Connectors for electronic equipment - Product requirements - Part 3-114 Rectangular connectors - Detail specification for protective housings for use with 8-.pdf
  • EN 61076-3-115-2010 en Connectors for electronic equipment - Product requirements - Part 3-115 Rectangular connectors - Detail specification for protective housings for use with 8-.pdf EN 61076-3-115-2010 en Connectors for electronic equipment - Product requirements - Part 3-115 Rectangular connectors - Detail specification for protective housings for use with 8-.pdf
  • EN 61076-3-116-2008 en Connectors for electronic equipment - Product requirements - Part 3-116 Rectangular connectors - Detail specification for protective housings for use with 8-.pdf EN 61076-3-116-2008 en Connectors for electronic equipment - Product requirements - Part 3-116 Rectangular connectors - Detail specification for protective housings for use with 8-.pdf
  • EN 61076-3-117-2009 en Connectors for electronic equipment - Product requirements - Part 3-117 Rectangular connectors - Detail specification for protective housings for use with 8-.pdf EN 61076-3-117-2009 en Connectors for electronic equipment - Product requirements - Part 3-117 Rectangular connectors - Detail specification for protective housings for use with 8-.pdf
  • EN 61076-3-118-2010 en Connectors for electronic equipment - Product requirements - Part 3-118 Rectangular connectors - Detail specification for a 4 pole + PE power connector with .pdf EN 61076-3-118-2010 en Connectors for electronic equipment - Product requirements - Part 3-118 Rectangular connectors - Detail specification for a 4 pole + PE power connector with .pdf
  • EN 61076-3-120-2016 en Connectors for electronic equipment - Product requirements - Part 3-120 Rectangular connectors - Detail specification for rewirable power connectors with sna.pdf EN 61076-3-120-2016 en Connectors for electronic equipment - Product requirements - Part 3-120 Rectangular connectors - Detail specification for rewirable power connectors with sna.pdf
  • EN 61076-3-122-2017 en Connectors for electrical and electronic equipment - Product requirements - Part 3-122 Detail specification for 8-way shielded free and fixed connectors for .pdf EN 61076-3-122-2017 en Connectors for electrical and electronic equipment - Product requirements - Part 3-122 Detail specification for 8-way shielded free and fixed connectors for .pdf
  • EN 61076-3-2008 en Connectors for electronic equipment - Product requirements - Part 3 Rectangular connectors - Sectional specification.pdf EN 61076-3-2008 en Connectors for electronic equipment - Product requirements - Part 3 Rectangular connectors - Sectional specification.pdf
  • EN 61076-4-001-1996 en Connectors with Assessed Quality for Use in d c  Low-Frequency Analogue and in Digital High-Speed Data Applications Part 4 Printed Board Connectors Section 0.pdf EN 61076-4-001-1996 en Connectors with Assessed Quality for Use in d c Low-Frequency Analogue and in Digital High-Speed Data Applications Part 4 Printed Board Connectors Section 0.pdf
  • 相关搜索

    当前位置:首页 > 教学课件 > 中学教育

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1