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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

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

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

A bend glass tube used to connect the end of retort or condenser with the receiving vessel. To ensure there's no spill.

Adapter

Three Types of Balances/ Weighing

Analytical


Top Loading


Triple Beam

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.

How many decimal places Top Loading balance can give?

2 decimal places

Used for taking the weight of the substances.

Triple Beam Balance

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)

A deep cylindrical glass vessel provided with a spout to facilitate pouring. Especially if you're transferring large amounts of liquid to another.

Beaker

It serves to heat substances in proper containers.

Bunsen Burner

What is the set up of bunsen burner?

Iron Stand, Ring, and Wire Gauze

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

What are two types of burette?

Acid and Alkaline

Used for supporting hot objects such as the porcelain crucible on the iron ring

Clay Triangle

Used for condensing vapor and cooling it to form a liquid.

Condenser

What is the spiral inside a condenser for?

Gas

Small clay cup made up of a material that can withstand extreme temperature. Used for heating substances and come with lids.

Crucible and Cover

Used t lift a hot crucible from a furnace or for other items which cannot be handled with bare hands.

Crucible Tongs

Used to hold the liquid mixture during distillation.

Distilling Flask

Used to measure small quantities of liquids counted by drop.

Dropper

Dropper should not be used to measure ml as it is not _________?

Accurate

• 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

Used for the evaporation of solutions and supernatant liquids, and sometimes to their melting point

Evaporating Dish

What is called the liquid that is separated from the solid during decantation?

Supernatant Liquid

What are the Separation Techniques?

Precipitation


Decantation


Evaporation


Filtration


Distillation

Process of transforming a dissolved substance into an insoluble solid from a supersaturated solution.

Precipitation

The solid being formed during precipitation is called ________?

Precipitate

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

The process of vaporizing a liquid and recovering it by condensing the vapors.

Distillation

The liquid formed during distillation is called ______?

Distillate

•has a round bottom and a long neck


It is used to hold liquids and can be easily swirled and heated

Florence Flask

Gripping and manipulating small or delicate objects

Forceps

Used to channel liquid or fine-grained substances into containers with a small opening

Funnel

Used to accurately measure the volume of chemicals for use in reactions

Graduated Cylinder

What are the lines called in a graduated cylinder or beaker?

Graduates

Hold firmly the various kinds of glass apparatus attaching them to the iron stand

Clamp Holder

Support for flasks, beakers, etc. during heating process

Iron Ring

Used as support for other apparatus in laboratory set- ups

Iron Stand

To prepare ingredients or substances by crushing and grinding them into a fine paste or powder.

Mortar and Pestle

The process of turning a particles or mixture into same sizes.

Trituration

A technique where a solution of known concentration is used to determine the concentration of an unknown solution.

Titration

Are used to dispense small quantities of liquids

Pipette

The bulb in the pipette that is used to hold liquids.

Aspirator Bulb

Allows measuring the volume and the density of solid objects in a non- destructive manner

Pycnometer

Used in liquid-liquid extractions to separate the components of a mixture into two immiscible solvent phases of different densities

Separatory Funnel

Used for scraping, transferring, applying powders and or paste like chemicals treatments.

Spatula

Used to mix chemicals and liquids for laboratory purposes.

Stirring Rod

-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

Serves as stand for holding test tubes to dry and also as support.

Test Tube Rack

Used for holding a test tube place when the tube is hot or should not be touched.

Test Tube Holder

Provide continuous gradual flow of liquids.

Thistle Tube

Measuring the distance between two opposite sides of a surface.

Vernier Caliper

-Around flask with a long neck and flat bottom.


-Used for precise dilutions and preparation of standard solutions.

Volumetric Flask

-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

A squeeze bottle with a nozzle, used to rinse various pieces of laboratory glassware, such as test tubes and round bottom flasks.

Wash Bottles

Holds boiling water as a medium to control heating.

Water Bath

Protect apparatus from breaking.

Wire Gauze

What does the wire gauze contains that insulate the heat?

Asbestos

Parts of Triple Beam Balance

Pan


Thumbscale


Sliders


Zero Mark

TRIPLE BEAM BALANCE PARTS


The area in which an object is placed in order to be weighted.

Pan

TRIPLE BEAM BALANCE PARTS


Adjust the tightness

Thumbscale

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

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.

Reading Sliders

Read each of the sliders and add their weights together.

When transferring a large amount of solid, what should be used or do?

Use a reagent bottle and a beaker.

When transferring small amount of solid what should be used or do?

Use a spatula

If transferring very small grains of particles, what should be used or do?

Using a piece of weighing paper to transfer a solid.

Powder papers can be any convenient size that fits the required dose. Four basic types are used:

Vegetable Parchment


White bond


Glassine


Waxed Paper

A thin, semiopaque, moisture-resistant paper.

Vegetable Parchment

An opaque paper that has no moisture-resistant properties.

White bond

A glazed, transparent, moisture-resistant paper.

Glassine

A transparent waterproof paper.

Waxed Paper

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

Tending to absorb moisture from the air

Hygroscopic

Easily evaporated at normal temperature

Volatile

Cloudy or opac measure at ______ miniscus


Clear measure at ______ miniscus

Higher/ Lower

To how close a given set of measurements are to their true value

Accuracy

To how close the measurements are to each other.

Precision

To the accuracy of a measure ( whether the result really do represent what they are supposed to measure).

Validity

To the consistency of a measure ( whether the results can be reproduced under the same condition)

Reliability