🧪Lesson 2:🧪
List of Commonly used Laboratory Apparattus 🔬
1.Evaporating dish: Used in crystallization
🧪🌬️ Behold the Magnificent Evaporating Dish! 🌡️✨ This little hero, made of heat-resistant materials like glass or porcelain, holds secret powers in the lab. 🧪🔥 When we heat it up, magic happens! The liquid inside dances with excitement and slowly transforms into vapor, leaving behind solid treasures that were once dissolved within. 🌫️✨ This epic process allows us to perform the art of separation, bidding farewell to the liquid and welcoming the solid. 💦👋 The mighty evaporating dish fearlessly endures scorching temperatures, standing tall as a vital companion in countless scientific quests! 🌟
2.Burette: To measure variable volumes of liquids from
0 to 50 ml to the closet 0.05 cm3 per reading.
Determining the Volume of liquid used requires two readings to be taken and subtracting one from the other, therefore, the uncertainty per measured V is ±0.1 cm3
🔍📏 Unlocking the Mysteries of Uncertainty! 🧪🔬 When we mention "uncertainty per measured V is ±0.1 cm³," a thrilling adventure in the world of measurement begins! 🌟🔍 It's like a secret door leading us into the realm of margin of error and uncertainty. 🚪✨ The value of ±0.1 cm³ acts as our guide, whispering that the true volume might be as much as 0.1 cm³ greater or smaller than what we measured. It's a thrilling dance of possibilities and surprises! 🎭🌠 So, let's embrace the unknown, for within the realm of uncertainty lies the magic of discovery! ✨🔍💫
🧪📏 Behold the Marvelous Burette! 🌟🔬 This long and slender glass tube is the maestro of precision, guiding scientists in their quest for accurate liquid measurements. 🎯✨ With its mystical valve at the bottom, the flow of liquid is controlled like a symphony, ensuring impeccable accuracy. 🎶🔐 Burettes take center stage in the captivating world of chemistry experiments, gracefully adding or measuring minuscule volumes of liquids with unparalleled precision. 💧🎭 They play a vital role in epic tasks like titrations, where every drop counts and accurate results are the ultimate treasure. 🏆🧪 Let's salute the remarkable burette, the guardian of meticulous measurements in the wondrous realm of chemistry! 🙌💫
3.Pipette: To measure specific Volume of liquid
(exactly 5, 10, 25 or 50 cm3) with great accuracy, uncertainty of ∓0.05 cm3.
It has one calibration mark.
🧪💧 Get Ready to Master the Art of Liquid Sorcery with the Amazing Pipette! 🪄🌟 This enchanting tool, resembling a thin tube with a bulb or magical mechanism, holds the key to measuring and transferring tiny drops of liquid with absolute finesse. ✨🔮 To unleash its powers, you simply squeeze the bulb or work its mystical mechanism, guiding the pipette's tip into the liquid abyss. 🧪🌊 As you release the bulb or mechanism, the pipette skillfully draws up the exact amount of liquid you desire, like a wizard conjuring a spell. 🌈💫 Pipettes are your trusty companions when precision is paramount, ensuring accurate measurements and seamless transfers of minuscule liquid wonders during mesmerizing experiments. 🧪🔬 Let's embark on a journey of liquid mastery with the remarkable pipette by our side! 🚀🔍
4. Measuring cylinder: To measure various volumes of liquids, accuracy depending on size and graduation of the cylinder (rather inaccurate)
📊🌈 Prepare to Conquer Volumetric Heights with the Majestic Measuring Cylinder! 🧪🔍 This tall and noble container stands proudly, adorned with volume markings that guide us through the world of liquid measurement. 🏰🌟 Its primary duty is to measure and gracefully cradle larger volumes of liquid, holding the secrets of precise measurements within its majestic walls. 💧✨ As you pour the liquid into this regal cylinder, your eyes are drawn to the enchanting meniscus, the captivating curve that adorns the liquid's surface. 🌌🌊 Reading the volume becomes a thrilling quest, as you decipher the secret message at the bottom of this liquid spectacle. 🧪🔬 Let us bow to the magnificence of the measuring cylinder, the loyal guardian of volumetric knowledge in the kingdom of chemistry! 🙌🔍💫
5. Volumetric flask: To prepare solutions with a specific volume, e.g. 250 cm3 , 1000 cm3 , etc., to the nearest 0.10 cm3.
🧪🧪 Prepare to Dive into the World of Precise Liquid Measurements with the Captivating Volumetric Flask! 🔬✨ This exceptional flask, featuring a flat bottom and an elegant long neck, holds the key to unparalleled accuracy in measuring and containing specific volumes of liquid. 🌊🌟 The volumetric flask stands as a symbol of perfection, ensuring that precise measurements are achieved when crafting solutions or dilutions. 🎯🧪 It is the go-to companion when accuracy becomes an art form, promising reliable results and impeccable scientific adventures. 🚀💧 Let's embrace the remarkable volumetric flask, the epitome of precision and the guardian of precise measurements in the vast realm of chemistry! 🙌🔍💫
6. Separating funnel: To separate two immiscible liquids
Separating funnel: A separating funnel is a cone-shaped container with a stopcock at the bottom. It is used to separate immiscible liquids (liquids that do not mix) by taking advantage of their different densities. After pouring the liquids into the funnel, you open the stopcock to allow the lower density liquid to separate and collect at the bottom.
7. Beaker: To measure only approximate volumes of liquids, not to be used for precise quantities.
It can be also used as a container.
🥼🌪️ Dive into the World of Mixing Marvels with the Versatile Beaker! 🧪🌟 This cylindrical container, boasting a flat bottom and a trusty spout, holds infinite possibilities within its glassy embrace. 💧✨ Known for its prowess in the art of mixing, heating, and cradling larger volumes of liquids or solids, the beaker reigns supreme. 🏆🔥 In the vast realm of the laboratory, beakers of various sizes stand as versatile companions, ready to fulfill a myriad of scientific missions. 🚀🌡️ Let us celebrate the beaker's unwavering presence, an emblem of experimentation and the heart and soul of the laboratory's rhythmic symphony! 🙌🔍🎶
8. Test tube holder: used to hold test tubes while heating them.
🧪🤝 Step into the Realm of Secure Test Tube Handling with the Mighty Test Tube Holder! 🔬✨ This formidable tool stands ready to ensure the safety and stability of test tubes in the thrilling world of experimentation. 🏋️♀️💪 Equipped with a versatile clamp or trusty tongs, it possesses the power to be adjusted and firmly grip the test tube, never letting go. 🚀🔒 The holder becomes an indispensable companion during heating, stirring, and the daring task of transporting test tubes, guaranteeing their safe passage through the realm of scientific exploration. 🌡️🌪️ Let us honor the mighty test tube holder, the unsung hero that upholds the banner of safety and stability in the grand arena of chemical experiments! 🙌🔍💥
9. Wire Gauze: used to allow uniform heat distribution when using a Bunsen-burner.
🔥🔗 Embrace the Fiery Dance with the Spectacular Wire Gauze! 🧪🌟 This fantastic creation, with its square or circular mesh of metal wires, takes center stage in the sizzling chemistry performance. 🎭✨ Placed gracefully on a tripod or support stand, it assumes the role of a reliable platform, lending its support to glassware during the passionate embrace of the Bunsen burner's flame. 🔥💃 As the dance of heat begins, the wire gauze takes on a magical role, orchestrating an enchanting symphony of even heat distribution. 🔥🎶 It ensures that no glassware dares to face the flame directly, safeguarding them from the fiery embrace. 🚫🔥 Let us applaud the remarkable wire gauze, the unsung hero that brings harmony to the realm of heating in the fascinating world of chemistry! 🙌🔍🌈
Common sizes of a pipette: 5, 10, 25 and 50ml.
A drop of liquid has a volume of 0.050 ml.
From the most to least accurate apparatus: pipette, beaker, cylinder, and burette.