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so sleep alone tonight
My name is ღ||汇嘉||SOPHIAღ. Give me presents! On 22061996 :D [Cancer] [CHRISTIAN] PLMGSS 2.1 I love Aaron (: |
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about this blog
This blog was opened by (SOPHIAARON) to accomodate (SOPHIA)'s Science journal.Do enjoy your stay here, and don't take what's not yours! tagboard
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DORCAS!!!(: MELISSA LISA LISHAN RACHEL RADIENT JANELLE JASLEY SEOWHWEE STELLA STACEY SARAH SHIYU JOYI Bue. Bue. Bue. archives
Videos. (:
-------------Physics------------Liquifaction. How to get out of a quicksand. Math Definitions : What Is Terminal Velocity. Newton's 3 laws of motion. Titration Technique using a burette How to use a pipette. Indroduction to Frictional force. Tacoma Bridge Collapsed! ---------------Chemistry---------- Forensic Video Periodic table song(: Crystal structures: graphite and diamond Chromotography- Separation of MIxtures Separation: Iron from Salt & Sand Mixture Steam Distillation Fractional Distillation Video Video Video Video Video Video Video Video Video Video Video Video Video credits
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Physic- 22
Refering to Lishan's question on the discussion forum of the IVLE: What's a burette? In case if you do not know how a burette looks like, please refer to the top(: there's a picture(: --> A burette is a vertical cylindral piece of laboratory glassware with a volumetric graduation on its full lenth and precision top, or stopcock, on the bottom. Burettes are extemely accurate: class A Burettes are accurate to 0.05cm cube. The precision of a burette makes careful measurement with a burette very important to avoid systematic error. History of A burette: Francois Antoine Henri Descroiziles developed the first burette(which looked more like a graduated cylinder) in 1791. Joseph Louis Gay-Lussac made an improved version of the burette that Francois made. The improved version consisted of a side arm. Joseph also coined the terms 'pipette' and 'burette' in an 1824 paper on the standarisation of indigo solutions. A major breakthrough was done by Kari Friendrich Mohr. He redesigned the improved burette by placing a clamp and a tip at the bottom. References: wikipedia |