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Home > Articles posted by beheerder (Page 2)

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Een vintage petroleumkachel die kachelbrandstof gebruikt, geplaatst op een grijze vloer naast een houten tafel en stoel. De kachel is groen met metalen beschermroosters en staat op een metalen plaat.
July 24, 2024

Alternative Ways to Heat Your Home

Read about the different alternative ways to heat your home, such as solar energy, heat pumps, infrared heating and pellet stoves. Learn how these sustainable heating options work, their benefits, and tips for implementation. For traditional kerosene heaters, we discuss the use of odorless heater fuel to minimize odor nuisance. This article provides practical tips and insights to reduce your energy costs and reduce your carbon footprint with environmentally friendly heating solutions.
Een lachend meisje met roze bril speelt met roze slijm tijdens een wetenschappelijk experiment.
July 23, 2024

Make your own slime with Borax (practical preparation)

Making your own slime with borax and PVA glue is a fun and educational experiment. This manual provides a step-by-step explanation, including required materials, safety precautions and the scientific theory behind the process. The experiment demonstrates polymerization and crosslinking, where borax acts as a crosslinker and turns the glue into elastic slime. The clear instructions allow students to learn and have fun in a safe way. Additionally, we answer questions about the role of borax, the effects of different amounts, and the use of other types of glue, providing a better understanding of the chemical reactions.
Kinderen dragen veiligheidsbrillen en kijken naar een demonstratie van het olifantentandpasta-experiment in een klaslokaal.
July 22, 2024

Making elephant toothpaste (practical preparation)

The elephant toothpaste experiment is a popular chemical demonstration in which hydrogen peroxide is broken down by a catalyst, resulting in spectacular foam production. This experiment is ideal for educational purposes and demonstrates how catalysts work. Materials include hydrogen peroxide (3% or 12%), liquid dish soap, dry yeast, food coloring, and warm water. Safety precautions, such as wearing gloves and goggles, are essential. The reaction produces a large amount of foam, making the experiment a fun and educational experience for children and adults.
Een persoon wast een glazen venster met zeepachtig water en een blauwe spons, waarbij gele rubberen handschoenen worden gedragen.
February 29, 2024

Clean with Ammonia

This article provides a comprehensive guide to using ammonia as a cleaning agent safely and effectively. It explains how to make a cleaning solution by adding ammonia to hot water, emphasizes the importance of safety measures such as ventilation and protective clothing, and warns of the dangers of mixing ammonia with bleach, which produces toxic gases. Furthermore, the difference between ammonia (solution) and ammonia (gas) is explained, and the risks of ammonia gas are highlighted. The article is an essential resource for anyone looking to clean with ammonia safely.
Persoon in laboratorium die een chemische stof afweegt op een digitale weegschaal voor het berekenen van de molariteit.
February 28, 2024

Calculate molarity – online calculator

Molarity is a measure of the concentration of a solute and is calculated by dividing the number of moles by the volume of the solution in liters. For an accurate calculation, knowledge of the number of moles and the exact volume of the solution is essential. Molarity is expressed in moles per liter (mol/L). This article provides a step-by-step guide to calculating molarity, including conversions from milliliters and centiliters to liters, and a handy online molarity calculator. The example shows that with 1 mole of substance dissolved in 1 liter of solution, the molarity is 1.00 mol/L.
Persoon wijst naar het element Ruthenium in een interactieve weergave van het periodiek systeem der elementen.
February 28, 2024

Convert grams to moles calculator

The Mole is an essential unit in chemistry that bridges the gap between the microscopic world of atoms and molecules and our macroscopic reality. It represents 6.022×10^23 particles of a substance, based on the number of carbon atoms in 12 grams of pure carbon-12. The article explains step-by-step how to calculate the molecular mass of a substance, using sodium hydroxide as an example, and then how to convert this mass to Mole. With a molecular mass of 39.997 u for sodium hydroxide, it shows how 100 grams of this substance can be converted into 2.50 Mole. A handy Mole calculator is provided to facilitate these calculations, along with tips for performing these calculations and calculating the molarity of a solution.
Glazen flesje met waterstofperoxide voor spoelen op een schone, witte ondergrond
February 28, 2024

Rinse with hydrogen peroxide

Hydrogen peroxide is an effective disinfectant that both kills bacteria and inhibits the growth of mold and yeast. It is used as a mouthwash to disinfect the mouth and throat and applied to the skin for cleaning wounds. This remedy is particularly useful for treating oral infections, such as gingivitis, and helps prevent plaque build-up. When used, hydrogen peroxide should be diluted for mouthwash and can be applied directly to wounds or with a sterile gauze pad. It is important to follow recommended guidelines for safe and effective use.
Open EHBO-kit met diverse inhoud zoals pleisters, verband, schaar, handschoenen, en antiseptische doekjes netjes gerangschikt.
February 27, 2024

What’s in a first aid kit?

A first aid kit is essential for providing first aid in case of accidents at home, at work, during travel or sporting activities. A basic first aid kit contains plasters, bandages, disinfectants, instruments such as scissors and tweezers, protective equipment such as gloves, and essential medications including painkillers and anti-allergy medications. It is important to personalize the kit to personal or specific needs and check it regularly for expired products. A well-equipped first aid kit, combined with knowledge of how to use it, can be crucial in emergency situations.
Gezond beplant aquarium met levendige waterplanten en vissen, geoptimaliseerd door NPK-bemesting
February 26, 2024

Aquarium fertilization calculator

Effective NPK fertilization in the aquarium is essential for the health of plants and fish. By using a basic test set, you can regularly check the water values ​​and accurately dose the required nutrients. The ideal nitrate level is between 10 and 25ppm. Dosage adjustments are dependent on measured values, with a divided schedule over several days recommended for stability. If nitrate levels are too high, often caused by overfeeding or insufficient water changes, changing the water is the only solution. Regular monitoring and adjustment of water quality support a healthy aquarium ecosystem.
Een vorkheftruck tilt gestapelde Intermediate Bulk Containers (IBC's) in een industrieel magazijn.
January 26, 2024

Chemicals | Wholesaler and Supplier

As a leading wholesaler, DutchChems offers a wide range of chemicals, suitable for both large and small projects. The company stands for quality, safety and compliance with strict regulations, while catering to a diverse customer base. With more than 200 products, including acids, bases, metals and organic compounds, DutchChems meets the needs of industry, education and research. The emphasis is on safe and sustainable use of chemicals, supported by expert advice and an informative helpdesk. DutchChems strives for innovation and safety in the chemical sector.
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