일반화학실험#1 유리세공 (Glass Blowing and Capillary) 보고서(레포트), 내용총정리

Exp1. Glass Blowing and Capillary (유리세공)

🧪 일반화학실험 1번째 포스팅
✔ 대학교 수업자료는 영어로 제공되기
때문에 영어내용이 포함되어 있습니다.
영어내용은 한국어로도 적어둘게요
(순서: 영어 - 한국어)
한국어로 번역이 안 되어 있는 내용은
파파고에 복사붙여넣기 하시면
내용을 쉽게 읽으실 수 있어요 ˘◡˘

✔ 많은 고등학생/대학생 분들께
실험 내용을 알려드리기 위해
작성한 포스팅입니다.
표절을 하게 되면 유사도검사를
통해 불이익을 받을 수 있습니다.

 

 

 

 

 

 

 

 

 

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참고 교재

General Chemistry Laboratory 7th Edition

(표준 일반화학실험 제7개정판)

 

저자 대한화학회
출판 천문각

 

 

 

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1. 실험원리 / 이론적배경

• Glass, which is mainly made of silica(SiO2), is not a complete crystalline solid and has ill-defined melting temperature. Glass has a very low reactivity. Also, it will soften with heating and you can easily change the shape. By cooling the glass, it will be stiff back. So it is used a lot in creating equipment for experiment.  
•   Glass possesses a wide range of properties depending on their compositions, in the chemical laboratory soda-lime glass and borosilicate glass are mainly used a lot.

 

• Soda-lime glass is made by mixing soda(Na2CO3), lime(CaCO3) and silica(SiO2). It becomes soften and at 300 to 400 °C. However, soda-lime glass products are weak with repeated heating and cooling due to the high thermal expansion coefficient.
•   On the other hand, borosilicate glass, produced with the trade name Pyrex or Kimax, is difficult to process because of high melting temperature of 700 to 800 °C. However, borosilicate glass products are strong with heating due to the low thermal expansion coefficient.

 

 

 

•   In the laboratory, a lot of glass tubes are made of soda-lime glass. When a glass tube is heated with the gas burner, it becomes soften and can be bent and pulled. Therefore, it can be readily processed.
•   The glass tube may cause burns if not handled with care because it does not seemingly have any change when it is heated at a very hot temperature.

 

 

 

 

교과서내용 (한국어번역)

 

 

 

 

3. 준비물 :실험기구 및 시약

Equipment and Reagents

• Glass tube
• triangle file
• gas torch
• gas
• working cotton gloves

 

 

 

4. 실험방법

Experimental Procedures

Exp A. Cutting Glass Tube (twice)

①   Place a glass tube on the flat surface and create a single, sharp scratch on the glass wall with a triangle file

②   Turn the scratch away from your body and place your thumbs on the glass tube.

③   Push your thumbs away from you.

④   Polish the glass tube ends by rotating them in the flame.

 

 

 

Exp B. Bending Glass Tube (twice)

①   Put the glass tube into the flame of the gas torch and heat it by rotating the tube until it is pliable and smooth.

(Heat it until the upper part of the flame turns yellowish.)

②   Remove the tube from the flame and bend the tube for the desired shape and hold it until it becomes hard.

 

 

 

Exp C. Pulling Glass Tube (twice)

①    Slowly roll a glass tubing in the flame until it softens.

②   When heated enough, pull out the glass tube from the flame and stretch it out by pulling it to both sides.

①   Wait until the glass tube cools and hardens.

②   Cut it in an appropriate length.

③   Polish the sharp tips in the flame.

 

 

 

 

 

 

 

5. 주의 및 참고사항

· Please make sure to wear cotton gloves during the experiment.

· There are many pieces of glass around you, so please clean up the surroundings.
· Put the glass in a glass waste box and be careful of burns and sharp glass.
· If you get hurt, you'll lose 10 points. I hope you experiment carefully.

 

 

 

6. 레포트 자료 구매 안내

해피캠퍼스 플랫폼을 통해 유료로 화학실험 레포트들을 구매하실 수 있습니다

(아래 링크를 통해 둘러보실 수 있어요)

 

 

 

 

완충용액 (Buffer Solution)

일반화학실험2 완충용액 레포트 레포트

미리보기

 

 

 

평형상수와 용해도곱 결정

일반화학실험2 평형상수와 용해도곱 결정 레포트 레포트

 

촉매반응

일반화학실험2 촉매반응 레포트 레포트

 

전기분해와 전기도금

일반화학실험2 전기분해와 전기도금 레포트 레포트

 

의약품합성-아스피린

일반화학실험2 의약품합성-아스피린 레포트 레포트

 

시계반응

일반화학실험2 시계반응 레포트 레포트

 

 

 

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🧪 이외에도 많은 일반화학실험 글들은 Category [대학생활-대학공부] 참고

 

 

 

 

▼ Exp2. 재결정과 거르기 ▼

일반화학실험#2 재결정과 거르기(Recrystallization and filtration) 보고서(리포트), 내용총정리

 

 

 

 

 

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