Science

1. Science By Tan Zi Jie (30) 1P1

2. Contents • Laboratory Rules • Thistle Funnel • Retort Stand • Filter Funnel • Bell Jar • Tripod Stand • Beaker • Flat-bottomed Flask

3. Contents • Test tube • Measuring Cylinder • Conical Flask • Water Trough • Round-bottomed flask • Evaporating Dish • Gas Jar • Bunsen Burner

4. Laboratory Rules • Never enter the laboratory unless a teacher is present. • Never run or play in the laboratory. • Never remove anything from the laboratory without your teacher's permission. • Never use your bare hands to transfer chemicals. • Never leave experiments unattended. • Never smell gases directly - fan a little of the gas towards the nose instead.

5. Laboratory Rules • Always follow strictly the instructions given. • Wear safety glasses when conducting experiments • Always read the label on bottles carefully to make sure it contains the chemical you want. Put the bottle in its original place immediately after use. • Always handle flammable liquids with great care and keep them away from naked flames. • Always handle concentrated acids with great care. • Report all accidents and breakage to your teacher. If any chemicals get onto your skin or clothing, wash the affected area with a large amount of water.

6. Laboratory Rules • Never look directly down the test tube or point the mouth of a test tube towards anyone when heating. • No eating or drinking in the laboratory. • Always adjust the Bunsen burner to give a luminous flame when not using it(or turn it off • Always tie up your tie or long hair. • Always wash hands after experiments. 

7. Thistle Funnel • A thistle funnel is a piece of laboratory glassware consisting mostly of a shaft of tube, with a funnel-like section at the top. • Thistle funnel are used to transfer liquids into a flask.

8. Retort Stand • A retort stand consists of a metal pole with a solid, firm base, used to hold, or clamp, laboratory glassware and other equipment in place, so that they do not fall down or come apart when conducting experiments.

9. Filter Funnel • A laboratory equipment, into which is placed filter paper, through which a mixture is poured in order to separate the mixture.

10. Beaker • A flat-bottomed vessel, with a lip, used as a laboratory container. • It is used for containing or collecting chemicals.

11. Flat-bottomed Flask • A flask with a flat bottom that is used for containing chemicals when preparing gases if the process requires heating.

12. Test Tube • A narrow tube made of glass for containing or heating small amounts of substances.

13. Measuring Cylinder • An item of glass laboratory equipment consisting of a tall, narrow cylinder with a scale marked up its length, which is used to measure liquids and solutions fairly accurately, but not precisely.

14. Conical Flask • A glass laboratory flask of a conical profile with a narrow tubular neck and a flat bottom, used to contain chemicals or collecting liquids.

15. Water Trough • A large basin used for containing chemicals or collecting liquids.

16. Round-bottomed Flask • A flask with a round bottom used for preparing gases if the process requires heating.

17. Evaporating Dish • A dish-like apparatus with a curved bottom for evaporating a liquid from a solution.

18. Gas Jar • A container used for collecting gas from experiments. It looks like a tube with a broad base and a broad opening.

19. Bunsen Burner • A small laboratory gas burner whose air supply is controlled with an adjustable air hole. • It has two kinds of flame, luminous(orange) and non-luminous( blue). The former is formed when the air hole is partially opened while the latter is formed when the air hole is closed.

20. References • www.google.com • http://en.wiktionary.org • http://www.dreamstime.com