Also called glycerin or glycerine, Glycerol is both a colorless and odorless liquid, that is fairly viscous. It is a simple polyol compound, with a triglyceride backbone and 3 hydroxyl groups.
Cobalt chloride crystals are commonly used in classrooms for chemistry experiments and demonstrations, primarily to study chemical properties and investigate reactions involving moisture and hydration. The most notable uses include:
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Indicator for Humidity and Hydration: Cobalt chloride is a popular indicator for moisture because it changes color based on its hydration state. In its anhydrous form, cobalt chloride is blue, and it turns pink when it absorbs water. This property makes it ideal for demonstrating reversible chemical changes and teaching about hydration and dehydration reactions.
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Le Chatelier’s Principle Demonstrations: Cobalt chloride can be used to illustrate Le Chatelier's Principle. By adding water or applying heat to the crystal, students can observe the reversible color change, demonstrating shifts in equilibrium due to changes in temperature or the presence of a reactant.
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Testing for Water Presence: Cobalt chloride paper, which is made using the crystals, is used in chemistry and environmental science labs to detect water vapor in various gases or liquids.
Due to its potential toxicity and the fact that it can cause skin irritation, cobalt chloride should be handled with proper safety measures, including wearing gloves and protective eyewear.
Sodium acetate, lab grade, anhydrous, powder - 500g.
Silver nitrate solution (0.1 normal) is used in classrooms for various chemistry experiments, particularly for demonstrating precipitation reactions and studying properties of silver ions. It is commonly used in:
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Precipitation Reactions: When silver nitrate is mixed with solutions containing chloride ions (e.g., sodium chloride), it forms a white precipitate of silver chloride. This reaction is useful for teaching concepts like solubility rules and ionic equations.
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Halide Testing: It can be used to identify halides (chloride, bromide, and iodide ions) in solutions, as each halide forms a distinct precipitate color (white, cream, or yellow) with silver nitrate.
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Titration Experiments: In analytical chemistry, a 0.1N silver nitrate solution can be used for Argentometric titrations, such as the Mohr method, to determine the concentration of chloride in a sample.
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Biological Staining and Antimicrobial Studies: In some biology classes, silver nitrate is used for staining, and its antimicrobial properties can be demonstrated to show how it affects microbial growth.
Because silver nitrate can stain skin and other materials, safety precautions such as gloves and goggles should be used when handling it.
It’s time to have some yummy gummy fun with this awesome bubble gum making kit! Mix up your gum base and then sweeten it with sugar. Next, use the three included flavors to make your gum more delicious than ever. Choose from watermelon, orange, and classic bubble gum — or try them all! Finally, cut it up, package it, and label it with stickers to give away as gifts. While you make these yummy treats, you’ll also learn about the scientific properties of elastic materials. Food ingredients included.
Ages: 6+
Experiments: 5
Piece Count: 10
Manual Pages: 16
• An introductory tour of chemistry with 28 classic experiments
• Discover the colorful effects of acids and bases
• Make fizzy and foamy reactions and write messages with invisible ink
• Learn about reactions between solids, liquids, and gases
• 48-page, full-color experiment manual
• Simple instructions for experiment
• Clear explanations of what happened and why
• Ages 10+
Learn about reactions between solids, liquids, and gases. Discover the colorful effects of acids and bases. Perform astonishing "magic" tricks for your friends. Make fizzy and foamy reactions. Write messages with invisible ink. Investigate metals and salts in electrochemical experiments with a 9-volt battery (not included). Learn for yourself how chemistry goes far beyond textbooks and laboratories to explain occurrences that happen around us every day. The 48-page,full-color experiment manual gives simple instructions for setting up and performing each experiment, and then clear explanations of what happened and why. This kit is ideal for children who are interested in chemistry but who are not yet ready for a more advanced chemistry set. It serves as an excellent introduction to our other chemistry sets.
Learn what air pollution is and how weather and geography affect it. Conduct experiments to test the air that you breathe everyday for pollutants. This kit comes complete with instruction manual, the chemicals and apparatus needed to conduct several air quality tests.
• Introductory chemistry set designed specifically for young kids
• Conduct experiments to identify different chemicals
• Discover the invisible gas carbon dioxide and its very visible effects
• 48-page manual guides young chemists through 25 experiments
Kick off a chain reaction of fun-filled experiments with this introductory chemistry set designed specifically for young kids. Junior chemists can safely explore simple chemistry using the tools in this kit and common household substances from the kitchen, bathroom, and laundry room. Learn how to use basic chemistry equipment such as filters, test tubes, pipettes, and measuring spoons, and beakers. Make your own test tube racks out of plaster and learn about the chemical reaction that formed them. Conduct experiments to identify different chemicals using reactions, heat, evaporation, and crystallization. Examine the composition of inks and dyes with chromatography experiments, where colors magically separate from one another on a filter paper disk. Explore the properties of water, soaps, and oils. Experiment with acids and bases using indicators (pH strips and cabbage juice) to identify them. Make fizzy reactions with acids and bases to dissolve shells and inflate balloons. Discover the invisible gas carbon dioxide and its very visible effects. The full-color, 48-page manual guides inquisitive young chemists and their adult supervisors through safely conducting each of the 25 experiments.
• The ultimate chemistry kit
• Designed and manufactured in Germany for safe experimentation
• Over 333 experiments in 32 sections
• Start with fun experiments to learn basic chemistry principles
• 192-page, full-color experiment manual
• Hands-on approach to teaching chemistry
• An excellent preparation for highschool level chemistry.
• Ages 12 and up.
CHEM C3000 is the ultimate chemistry set. This kit includes all of the components from CHEM C2000, plus dozens of additional tools and chemicals, and 100 additional experiments, for a total of more than 333 experiments. The 192-page, full-color experiment manual is written at a more advanced level than the other CHEM kit manuals. You could call it a textbook, but the manual is too much fun to make that comparison. CHEM C3000 has a similar hands-on approach to teaching chemistry as our other CHEM kits, but also teaches more advanced topics such as chemical equations, atomic structures, and the periodic table. These concepts are critical to continued study of chemistry. CHEM C3000 is an excellent preparation for highschool level chemistry. Ages 12 and up.
49 1/2" x 38". In 4 colors on heavy markable chart stock. Elements included up to UUQ #114
Study of the chemical composition of toothpastes. Students evaluate several toothpastes for percent of solids, pH, foam formation, abrasive action, specific substances. They use this data to make judgments about their effectiveness. Materials for 12 pairs of students. Grades 7-12.
Limewater solution is commonly used for testing the presence of carbon dioxide in gaseous samples in school laboratories, and refining of sugar in a process called carbonatation. 4 liters.
Limewater solution is commonly used for testing the presence of carbon dioxide in gaseous samples in school laboratories, and refining of sugar in a process called carbonatation. 1 liter.
2,6-Dichloroindophenol Sodium salt (indophenol), reagent - 1g
Non-nutrient agar powder is typically used in classrooms for microbiology experiments, such as studying slime molds, observing fungal growth, or culturing environmental samples. Since it lacks nutrients, it does not support the growth of most bacteria or fungi on its own, making it ideal for experiments where a nutrient source is added selectively to encourage the growth of specific organisms. It's often used to highlight the effects of environmental factors on microbial growth, demonstrate the role of external nutrient sources, or as a base for investigating other biological processes.