common laboratory apparatus

Summary

In this chemistry lab class, students are introduced to common laboratory apparatus and their uses. The lecture covers items like test tubes, flasks, cylinders, and stands, emphasizing their functions in experiments. The session includes demonstrations of how to use equipment safely and effectively, preparing students for hands-on lab activities.

Takeaways

• 🧪 The class is focused on learning about common laboratory apparatus and their specific uses.
• 🗑️ The tashku is used to contain liquids or chemical reagents for reactions.
• 🔬 The erlenmeyer flask has a flattened bottom and a slightly elevated neck.
• 📏 The graduated cylinder is used for measuring liquids.
• 🥣 The beaker is used for containing and measuring large amounts of liquids.
• 🧴 The ordinary funnel aids in filtration operations.
• 🔭 The watch glass is used for observing substances, either solid or liquid.
• 🔩 The wire gauze (juargos) is used to support vessels or containers during heating.
• 🧷 The iron stand with clamps is used to secure equipment during experiments.
• 🌡️ The thermometer is used to measure the temperature of substances.
• 🧉 The separatory funnel is used to separate immiscible liquids.

Q & A

What is the primary purpose of a tashku in a laboratory setting?

The tashku is used to contain liquids or chemical reagents for a chemical reaction.

What is unique about the design of an Erlenmeyer flask?

The Erlenmeyer flask has a flattened bottom and a slightly elevated neck.

How is a graduated cylinder typically used in a lab?

A graduated cylinder is used to measure liquids.

What is the main function of a beaker in laboratory experiments?

A beaker is used to contain liquids and also for measuring large amounts of liquids.

What aid does an ordinary funnel provide during filtration operations?

An ordinary funnel aids in the process of filtration by providing a channel for the liquid to pass through.

What is the primary use of a watch glass in a laboratory?

A watch glass is used to contain substances, either solids or liquids, for observation.

What is the purpose of a wire gauze in a laboratory setting?

A wire gauze is used to support vessels or containers when heating.

How does an iron stand assist in laboratory procedures?

An iron stand supports iron clamps and other equipment, providing stability during various laboratory operations.

What is the specific use of a mortar and pestle in a lab?

A mortar and pestle are used for grinding purposes to convert larger particles into smaller or finer ones.

What is the role of an evaporating dish in a laboratory?

An evaporating dish is used to contain liquids that need to be evaporated.

How is a steering rod utilized in a laboratory?

A steering rod is used for mixing purposes, typically in conjunction with a stirring rod.

What is the primary function of a thermometer in a lab?

A thermometer is used to determine the temperature of substances.

What is the purpose of a test tube rack?

A test tube rack is used to safely hold test tubes, especially when they contain substances that need to be heated.

How does a medicine dropper assist in transferring liquids?

A medicine dropper is used to transfer small amounts of liquids from one vessel to another.

What is the typical use of a test tube holder in a laboratory?

A test tube holder is used to securely hold a test tube when heating liquids inside it.

What is the purpose of a water trough in laboratory experiments?

A water trough is used to contain water, especially for experiments that require the water displacement method.

How does a clay triangle support a crucible during heating?

A clay triangle is used to support a crucible when heating substances inside it, preventing direct contact with the heat source.

What is the specific use of a test tube brush in a lab?

A test tube brush is used to clean test tubes, but it should not be used with acids as the bristles can melt upon contact.

What is the function of a pipette in a laboratory?

A pipette is used to measure accurate and exact amounts of liquids.

How is a volumetric flask used in a laboratory?

A volumetric flask is used to measure exact amounts of liquids, ensuring precise measurements for experiments.

What is the primary function of a separatory funnel?

A separatory funnel is used to separate two or more immiscible liquids.

How does a distilling flask work in the process of distillation?

A distilling flask is used to contain the liquid to be distilled. It works together with a condenser where the evaporated gas is condensed back into a liquid.

What is the role of a water bath in laboratory procedures?

A water bath is used for gentle heating of substances, such as when heating a liquid inside a beaker without direct exposure to a heat source.

What is the purpose of an adapter in conjunction with a condenser?

An adapter is used with a condenser to collect the distillate, which is the substance resulting from the distillation process.

How does a triple beam balance contribute to a laboratory?

A triple beam balance is used to measure or determine the mass of an object in a laboratory.

What is the function of a Bunsen burner in a lab?

A Bunsen burner is used as a heat source in various laboratory procedures, often in conjunction with a fishtail to spread the flame.

What is the purpose of a reagent bottle in a laboratory?

A reagent bottle is used to contain reagents or chemicals for use in experiments.

Outlines

00:00

🧪 Introduction to Common Laboratory Apparatus

The script introduces the audience to the second activity in a chemistry laboratory course. The laboratory assistant, Miss Maurice, is introduced along with other assistants who will help during the laboratory activities. The main focus of the activity is to familiarize students with common laboratory apparatus and their specific uses and functions. Various apparatus are mentioned, including the flask for containing liquids or chemical reagents, the Erlenmeyer flask with its characteristic shape, the graduated cylinder for measuring liquids, the beaker for containing and measuring larger volumes of liquids, the ordinary pan for filtration, the watch glass for observing substances, the wire gauze for supporting vessels during heating, the iron stand with clamps for stability, the iron ring for supporting containers during heating, the mortar and pestle for grinding, the evaporating dish for evaporating liquids, the stirring rod for mixing, and the thermometer for measuring temperature. The script also mentions the test tube rack for safely holding test tubes and the medicine dropper for transferring small amounts of liquids.

05:04

🔬 Further Exploration of Laboratory Apparatus

This paragraph continues the exploration of laboratory apparatus, starting with the medicine dropper for transferring small amounts of liquids. The crucible tong is highlighted for holding crucibles during heating, followed by the test tube holder for safely holding test tubes during experiments. The water trough is mentioned for containing water in experiments requiring the water displacement method. The clay triangle is introduced as a support for crucibles during heating, with the clay shield providing additional support. The testing brush is noted for cleaning test tubes, with a caution against using it with acids due to the risk of melting the bristles. The script then describes the pipette for measuring precise amounts of liquids, the volumetric flask for exact liquid measurements, and the cork borer for creating holes in corks. The buret is introduced for measuring exact amounts of liquids, typically used in titration. The separatory funnel is explained for separating immiscible liquids, with an operational demonstration. The fishtail is described as a tool to spread the flame of a Bunsen burner. The script also covers the crucible and copper for chemical reactions that require heating substances inside a crucible without air.

10:07

🌡️ Advanced Laboratory Equipment and Techniques

The script delves into more advanced laboratory equipment and techniques. It starts with the distilling flask for containing liquids to be distilled, involving evaporation and condensation processes. The condenser is introduced as a device to condense evaporated gases back into liquids. The water bath is explained for gentle heating of substances, such as heating liquids in a beaker without direct exposure to heat. An adapter is mentioned for use with the condenser to collect the distillate, which is the result of the distillation process. Capillary tubes are highlighted for use in experiments determining the boiling points of oils. The iron stand assembly is described, supporting the iron ring and clamps for various laboratory setups. The triple beam balance is introduced for measuring the mass of objects. The script also mentions the use of a gas pump with a butyl rubber tubing and a clay shield to shield the flame from being blown off by the gas flow. The pipettor is noted for aiding in pipetting substances. Lastly, the reagent bottle is introduced for containing reagents or chemicals.

15:14

📝 Conclusion and Assignment Details

The final paragraph concludes the laboratory apparatus introduction and provides details on the assignment. Students are instructed to draw the apparatus and write their functions in their lab guide. The script specifies the submission deadline as Friday, August 28th. The video script is concluded with an introduction of the teacher, Professor Desitas Ruiz, from Holiday University Dreams.

Keywords

💡Erlenmeyer Flask

An Erlenmeyer flask is a type of laboratory flask with a flat bottom and a constricted neck. It is commonly used for mixing, stirring, and heating chemicals. In the video, it is mentioned that the flask has a 'flattened button' and an 'elevated neck', which are characteristic features that distinguish it from other types of flasks.

💡Graduated Cylinder

A graduated cylinder is a piece of laboratory equipment used to measure the volume of liquids. It is a tall, narrow container with markings along its side to indicate volume. In the video script, it is noted as being used to 'measure liquids', which is a fundamental operation in many laboratory experiments.

💡Beaker

A beaker is a simple container, typically made of glass or plastic, used for mixing, stirring, and heating chemicals. It is often used for measuring larger volumes of liquids. The script mentions that the beaker is used to 'contain liquids' and is also used 'for measuring large amounts of liquids', highlighting its versatility in the lab.

💡Watch Glass

A watch glass is a shallow, round piece of glass used in laboratories to cover containers or to hold small amounts of substances for observation. The script describes it as being used 'to contain substances for you to observe', whether they are solids or liquids, indicating its role in observation and protection.

💡Iron Stand

An iron stand is a sturdy metal frame used in laboratories to support other equipment such as clamps, rings, and rods. It is essential for holding apparatus in place during experiments. The script explains that the iron stand 'supports the iron clamps', showing its foundational role in setting up experimental apparatus.

💡Mortar and Pestle

A mortar and pestle is a tool used since ancient times to crush and grind substances into finer particles. The mortar is a bowl, typically made of hard wood, ceramic, or stone, and the pestle is a heavy and often rounded object. In the video, it is mentioned that the mortar and pestle are used 'for grinding purposes to convert larger particles into smaller ones', which is crucial for certain chemical reactions.

💡Evaporating Dish

An evaporating dish is a shallow, flat, dish-like container used to hold a liquid that is to be evaporated. It is typically made of glass, ceramic, or metal. The script describes it as being used 'to contain liquids to be evaporated', which is a common process in chemistry to concentrate solutions or recover solvents.

💡Thermometer

A thermometer is a device used to measure temperature. It is a fundamental tool in laboratories for monitoring the temperature of reactions and substances. The script notes that the thermometer is used 'to determine the temperature of substances', which is essential for controlling and understanding chemical processes.

💡Separatory Funnel

A separatory funnel is a piece of laboratory equipment used to separate immiscible liquids (liquids that do not mix). It typically has a stopcock at the bottom to allow the separated liquid to be drained off. The script describes its operation, mentioning that it is used 'to separate two or more immiscible liquids', which is a common procedure in organic chemistry.

💡Burette

A burette is a piece of laboratory equipment used for measuring, dispensing, or transferring precise volumes of liquid, often used in titration experiments. It has a stopcock and a scale to ensure accuracy. The script mentions that the burette is used 'to measure exact amounts of liquids', typically for titration purposes, emphasizing its precision.

💡Crucible

A crucible is a container that can withstand high temperatures, often used for melting, calcining, or reacting substances at high temperatures. The script describes it as being used 'for those chemical reactions where you're going to heat the substance inside', indicating its role in high-temperature experiments.

Highlights

Introduction to common laboratory apparatus for chemistry experiments.

Tashku is used to contain liquids or chemical reagents for reactions.

Erlenmeyer flask has a flattened bottom and an elevated neck.

Graduated cylinder is used for measuring liquids.

Beaker is used for containing and measuring large amounts of liquids.

Ordinary funnel aids in filtration operations.

Watch glass is used to contain substances for observation.

Wire gauze supports vessels or containers when heating.

Iron stand with clamps is used for supporting equipment.

Mortar and pestle are used for grinding substances.

Evaporating dish is used to contain liquids for evaporation.

Steering rod is used for mixing purposes.

Thermometer is used to determine the temperature of substances.

Test tube rack is used for safely holding test tubes.

Medicine droppers are used to transfer small amounts of liquids.

Crucible tongs are used to hold crucibles during heating.

Test tube holder is used to hold test tubes during heating.

Water trough is used to contain water for experiments requiring water displacement.

Clay triangle is used to support crucibles during heating.

Testing brush is used to clean test tubes with detergent and water, not acid.

Pipette is used to measure accurate amounts of liquids.

Volumetric flask is used to measure exact amounts of liquids.

Borer is used to create holes in corks.

Buret is used to measure exact amounts of liquids for titration.

Separatory funnel is used to separate immiscible liquids.

Fishtail is used with a Bunsen burner to spread the flame.

Crucible and copper are used for heating substances without air.

Distilling flask is used to contain liquids for distillation.

Condenser is used to condense evaporated gases back into liquids.

Water bath is used for gentle heating of substances.

Adapter is used with a condenser to collect distillate.

Capillary tube is used in experiments determining oil boiling points.

Iron stand assembly supports various laboratory equipment.

Triple beam balance is used to measure the mass of objects.

Gas pump is used to create suction for filtration.

Pipettor aids in pipetting substances.

Reagent bottle is used to contain reagents or chemicals.

Assignment to draw and describe the functions of the laboratory apparatus.

Submission deadline for the lab guide is Friday, August 28th.

Transcripts

hi

welcome back to our class chemistry

100b laboratory

before we are going to introduce to you

these

apparatus for our second activity

may i introduce to you our laboratory

assistance

in the person of miss maurice

hi these ladies will be

helping you during the laboratory

activities when we will have our

face-to-face

classes thank you ladies

today we will perform our second

activity

that is on the common laboratory

apparatus now in this activity

we will be learning what are these

laboratory apparatus which are commonly

used during the experiment

and we will also try to know what are

their

specific uses and functions

so the common laboratory apparatus are

the following

we have first the tashku

[Music]

now this statue is used to contain

liquids

or chemical reagents for a chemical

reaction

then we have the erlenmeyer flask

forgot to look at the erlenmeyer flask

it has

a flattened button

and an elevated a little bit of the neck

then we have the graduated cylinder

this is used to measure liquids

then we have the beaker

okay this is used to contain liquids and

it is also used

for measuring large amount of liquids

we have the ordinary panel this will aid

you

during filtration operation

[Music]

then we have the watch glass this is

used to contain substances

for you to observe be it a solid

or a liquid

then we have the juargos

the wire boss is used to support

vessels or containers when hitting

[Music]

then this is what we call the iron stand

the iron stand supports the iron clamps

so we have here the iron clamps

and we have the buried clamp

because it supports the clamps

so how does this operate you do this way

and then you have to fasten the clamp

tightly onto the iron stand

next we have the iron ring

okay the iron ring supports a container

when heating so this will be

also supported by the iron

stand this is the

mortar and vessel now the mortar and

castle

is used for grinding purposes to convert

larger particles into smaller ones or

finer ones

this is the evaporating dish

[Music]

it is used to contain liquids to be

evaporated

this is the steering rod

the purpose of the steering rod is of

course the steer

for mixing purposes

and this is the thermometer

the thermometer is used to determine

the temperature of substances

then we have the castro brack now the

pesticide is where

you're going to place the test tubes for

safety purposes so for example

if you have these test tubes then when

you're going to place them safely

put them into the test tube

then we have the medicine wrappers

this is used to transfer liquids

small amount of liquids from one vessel

to the other

then we have the crucible tone

the crucible tongue is used to hold

the crucible especially when

you are going to hit the crucible say

for example

you hold the crucible this way

then we have the test job holder

they're going to hold the pestile when

you're going to hit liquids in a test

tube

of course you're going to hold the test

tube with

a testum holder

this is the water drop the water trough

is used to contain water

especially for experiments that needs

water displacement method

then this is the clay triangle

the clay triangle is used to support

the crucible when you are going to hit

something inside the crucible of course

this is supported by

what we call the clay shield

this is the testing brush this is used

to clean the costumes

now when you're going to use a dust shoe

brush in cleaning the costume

do not use this when you're cleaning the

dress tube with an acid

this is only used to clear the test

tubes

when you're cleaning the texture with

detergent

and water not an acid

because the bristles here will be melted

once this will come in contact with the

acid

this is the pipeline

the pipette is used to measure accurate

and exact amount of liquids

then we have the volumetric flask

the volumetric flask is used to measure

exact amount of liquids

then we have the pork bottle

from the name itself pork bottle this is

used to bore holes

through the cork

so how does this operate so

when you're going to bore a hole through

the port the first thing that you're

going to do

is you're going to soften the

pork by pressing it or rolling it

on the table they will tuck then

you wet it with water then roll again

on the table top and once it is softened

you are going to then you are going to

pour the hole through this port using

a cord water so you have already bored a

hole

there this is what we call the buret

the buret also is used to measure

exact amount of liquids

usually this is used for titration

[Music]

purposes

florence mask with a longer neck

and a rounded bubble

this is a separatory funnel the

separatory phantom is used to separate

two or more invisible liquids

okay so how does this operate if you

have already the content

inside the separatory panel you have

only two

turn this valve here in such a way that

the liquid will flow down this tube

then you close the bag

[Music]

this is the fishtail the fishtail

is used together with the bunsen burner

because

this is used to spread the flame of the

passenger

so you place it on top of the barrel of

the bunsen border

[Music]

this is the crucible and copper

now for those chemical reactions wherein

you're going to hit the substance inside

this possible and does not need

the air so you are going to use a

crucible

and hovering

this is a distilling flask

the distillate class is used to contain

the liquid

to be distilled in destination

there are two processes involved the

evaporation

and condensation so into this distilling

class

we are going to place the liquid to the

evaporator

and this work together with

the condenser so

it is it works this way or

it functions this way and into the

condenser this is the condenser

and into the condenser the gas that is

evaporated from the distilling flask

will be condensed back into the liquid

this is what we call the water bath

now gentle heating requires

a water bath when you hit something

like when you are going to hit the

liquid inside the beaker

and you don't want it to be heated

directly so you have

to place this into the

water bottle

so that is the function of the water

bath when gentle heating

is required you place the substance

into a beaker then place it

inside a hot

[Music]

this is what we call an adapter

an adapter works together with the

condenser

so this is to be inserted at the tip of

the condenser

in order to collect the destinate

the destinate is that substance that is

the result of destination

[Music]

then we have the

capillary chew

these are small tubes

in which a substance is allowed to pass

through this capillary

this is used during the experiment on

the determination of the boiling points

of

the oil let's have the

iron stand assembly now

in this assembly this

iron stand supports the iron ring

[Music]

so you place the iron ring here it

is supported by the iron stand

then the iron clamp

this is the iron clamp that is also

supported

by the iron stand and this is what we

call

the flask clamp

this is the flask clamp

so this flask clamp is used to

hold the early measure class

when you are going to hit something in

the early

class and the wire boss supports the

early mayor class

when you're going to hit something

inside the early fire flask

so this is what we call

the iron stand assembly

this is what we call the triple beam

balance

the triple beam balance is used to

measure or determine the mass of

an object

this is the glacial

this is used to support the vessels or

containers

when you are going to eat something so

when you you're going to eat something

you are going to use the butter boiler

that's this rubber tubing into the gas

pump

then place the clay shield

over the russian border this way

shielding

the flame off the constant border from

being blown

off by the grip

this is what you call the pipe before

the pipettor is used

to aid in pipetting a substance

through the paper use it this way

94

then we have the last but nothing is

the reagent buffer the agent bottle is

used to contain

the reagents or the chemicals

so these are the common laboratory

apparatus

that you are going to use during the

experiment

so in your lab guide you are going to

draw this

and write their functions

kindly submit your work on friday

august 28th

[Music]

this is your teacher professor desitas

ruiz

of holiday university dreams