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81 Cards in this Set
- Front
- Back
Used in science lab for heating, combustion, and sterilization. The flame comes from the alcohol source. |
Alcohol Lamp |
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Are highly sensitive lab instrument designed accurately measure mass. It has a memory to save the mass of your weighing vessel. |
Analytical Balance/Mettler Balance |
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Analytical Balance and Top Loading has the function to _______? It means to zero out the weight of whatever was already on the scale and just to weigh the substance. |
Tare |
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A bend glass tube used to connect the end of retort or condenser with the receiving vessel. To ensure there's no spill. |
Adapter |
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Three Types of Balances/ Weighing |
Analytical Top Loading Triple Beam |
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How many decimal places analytical balance can give? |
Up to 5 decimal places. It is considered to be the most precise when it comes to weighing. |
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How many decimal places Top Loading balance can give? |
2 decimal places |
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Used for taking the weight of the substances. |
Triple Beam Balance |
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What is the disadvantage of Triple Beam Balance? |
It doesn't have a tare function so you really need to manually subtract the weighing vessel to get the measurement of the substance. (It can only give whole numbers) |
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A deep cylindrical glass vessel provided with a spout to facilitate pouring. Especially if you're transferring large amounts of liquid to another. |
Beaker |
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It serves to heat substances in proper containers. |
Bunsen Burner |
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What is the set up of bunsen burner? |
Iron Stand, Ring, and Wire Gauze |
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A long slender cyrindical graduate used for the precise and accurate measurement of gases and liquids in quantities as small as 1/10 of milliliter. |
Burette |
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What are two types of burette? |
Acid and Alkaline |
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Used for supporting hot objects such as the porcelain crucible on the iron ring |
Clay Triangle |
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Used for condensing vapor and cooling it to form a liquid. |
Condenser |
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What is the spiral inside a condenser for? |
Gas |
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Small clay cup made up of a material that can withstand extreme temperature. Used for heating substances and come with lids. |
Crucible and Cover |
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Used t lift a hot crucible from a furnace or for other items which cannot be handled with bare hands. |
Crucible Tongs |
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Used to hold the liquid mixture during distillation. |
Distilling Flask |
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Used to measure small quantities of liquids counted by drop. |
Dropper |
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Dropper should not be used to measure ml as it is not _________? |
Accurate |
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• It has a narrow neck and expands toward its base. •This allows easy mixing and swirling of the flask without too much risk of spilling. |
Erlenmeyer Flask |
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Used for the evaporation of solutions and supernatant liquids, and sometimes to their melting point |
Evaporating Dish |
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What is called the liquid that is separated from the solid during decantation? |
Supernatant Liquid |
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What are the Separation Techniques? |
Precipitation Decantation Evaporation Filtration Distillation |
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Process of transforming a dissolved substance into an insoluble solid from a supersaturated solution. |
Precipitation |
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The solid being formed during precipitation is called ________? |
Precipitate |
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Process of separation of liquid from solid and other immiscible liquids,by removing the liquid layer at the top from the layer of solid or liquid below. |
Decantation |
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The process of vaporizing a liquid and recovering it by condensing the vapors. |
Distillation |
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The liquid formed during distillation is called ______? |
Distillate |
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•has a round bottom and a long neck •It is used to hold liquids and can be easily swirled and heated |
Florence Flask |
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Gripping and manipulating small or delicate objects |
Forceps |
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Used to channel liquid or fine-grained substances into containers with a small opening |
Funnel |
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Used to accurately measure the volume of chemicals for use in reactions |
Graduated Cylinder |
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What are the lines called in a graduated cylinder or beaker? |
Graduates |
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Hold firmly the various kinds of glass apparatus attaching them to the iron stand |
Clamp Holder |
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Support for flasks, beakers, etc. during heating process |
Iron Ring |
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Used as support for other apparatus in laboratory set- ups |
Iron Stand |
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To prepare ingredients or substances by crushing and grinding them into a fine paste or powder. |
Mortar and Pestle |
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The process of turning a particles or mixture into same sizes. |
Trituration |
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A technique where a solution of known concentration is used to determine the concentration of an unknown solution. |
Titration |
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Are used to dispense small quantities of liquids |
Pipette |
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The bulb in the pipette that is used to hold liquids. |
Aspirator Bulb |
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Allows measuring the volume and the density of solid objects in a non- destructive manner |
Pycnometer |
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Used in liquid-liquid extractions to separate the components of a mixture into two immiscible solvent phases of different densities |
Separatory Funnel |
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Used for scraping, transferring, applying powders and or paste like chemicals treatments. |
Spatula |
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Used to mix chemicals and liquids for laboratory purposes. |
Stirring Rod |
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-A glass tube with one end open and the other end closed, the closed end is rounded. -Are primarily used qualitative assessment and comparison. |
Test Tube |
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Serves as stand for holding test tubes to dry and also as support. |
Test Tube Rack |
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Used for holding a test tube place when the tube is hot or should not be touched. |
Test Tube Holder |
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Provide continuous gradual flow of liquids. |
Thistle Tube |
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Measuring the distance between two opposite sides of a surface. |
Vernier Caliper |
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-Around flask with a long neck and flat bottom. -Used for precise dilutions and preparation of standard solutions. |
Volumetric Flask |
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-A round piece of glass that is slightly concave/convex. -It can hold a small amount of liquid or solid. -Used for evaporation purposes and also can function as a lid for a beaker. |
Watch Glass |
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A squeeze bottle with a nozzle, used to rinse various pieces of laboratory glassware, such as test tubes and round bottom flasks. |
Wash Bottles |
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Holds boiling water as a medium to control heating. |
Water Bath |
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Protect apparatus from breaking. |
Wire Gauze |
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What does the wire gauze contains that insulate the heat? |
Asbestos |
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Parts of Triple Beam Balance |
Pan Thumbscale Sliders Zero Mark |
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TRIPLE BEAM BALANCE PARTS The area in which an object is placed in order to be weighted. |
Pan |
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TRIPLE BEAM BALANCE PARTS Adjust the tightness |
Thumbscale |
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Balance Set Up |
-Move all three sliders so that they read 'zero' -Make sure that there is nothing on the pan and that it is clean -Check to see if the balance reads zero-Your balance isn't reading zero so you need to turn the thumbscrew to adjust the balance until it reads zero -Your balance is ready to measure. Place object to be weighed on the pan. Make sure that no part of the object is supported by the table |
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Moving Sliders |
-Move the sliders, beginning with the largest. When moving a slider causes the balance to tip, move the slider back to the previous position. -Move the next slider until it tips the balance. Place it in the previous position. -Move the final slider until the balance reads zero. |
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Reading Sliders |
Read each of the sliders and add their weights together. |
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When transferring a large amount of solid, what should be used or do? |
Use a reagent bottle and a beaker. |
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When transferring small amount of solid what should be used or do? |
Use a spatula |
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If transferring very small grains of particles, what should be used or do? |
Using a piece of weighing paper to transfer a solid. |
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Powder papers can be any convenient size that fits the required dose. Four basic types are used: |
Vegetable Parchment White bond Glassine Waxed Paper |
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A thin, semiopaque, moisture-resistant paper. |
Vegetable Parchment |
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An opaque paper that has no moisture-resistant properties. |
White bond |
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A glazed, transparent, moisture-resistant paper. |
Glassine |
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A transparent waterproof paper. |
Waxed Paper |
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Hygroscopic and volatile drugs are best protected with ____________ that is double-wrapped and covered with a bond paper to improve the appearance. Parchment and glassine papers are of _______ use for these drugs. |
Waxed Paper/ Limited |
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Tending to absorb moisture from the air |
Hygroscopic |
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Easily evaporated at normal temperature |
Volatile |
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Cloudy or opac measure at ______ miniscus Clear measure at ______ miniscus |
Higher/ Lower |
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To how close a given set of measurements are to their true value |
Accuracy |
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To how close the measurements are to each other. |
Precision |
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To the accuracy of a measure ( whether the result really do represent what they are supposed to measure). |
Validity |
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To the consistency of a measure ( whether the results can be reproduced under the same condition) |
Reliability |