When you boil the solid, you melt it back to the liquid state. You have to completely melt every crystal, by the way, or the liquid will quickly re-solidify. You can repeat this cycle forever, theoretically, just as you can freeze and melt water as many times as you like. The plastic pouch eventually wears out and leaks, though since sodium acetate is a food additive, it is non-toxic.
Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. Household Appliances. How do sodium-acetate heat pads work? Updated: Apr 27, Heating pads are a good solution if you feel pain in your muscles, back, neck or joints. It has a distinct vinegar like smell and completely safe when used in our heating pads.
Our sodium acetate heat packs are non-toxic and can stay warm for up to 2. So, if have spent time inside a hockey arena, skiing, at a football game or waiting for public transit and felt your hands freeze, our hand warmers would have come in quite handy.
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Cart : 0. Menu Cart 0. Carolina offers the highest quality kits for a hands-on approach within AP Chemistry classrooms. We provide products designed for the new and old curriculum. Enhance the science experience with Carolina's lab kits designed specifically for college-level distance education. Interactive, engaging and elementary age appropriate. Quality digital science resources and outstanding support for STEM concpets.
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Carolina covers the world of life science with everything from slides and kits to Agricultural and Vet Science. We have kits for new and traditional AP Biology labs.
Choose from our kits, follow a college board lab, or design your own with our wide variety of equipment and supplies. Prepare your students for medical and lab tech careers with Carolina's wide range of equipment, kits and models.
Carolina offers a variety of resources and products to help your students delve into the emerging area of Genetics.
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Selection includes aquatic and classroom plants. Carolina's extensive assortment of compound and stereomicroscopes span virtually all grade levels and applications. Popular corded compound microscopes and cordless microscopes for elementary to advanced use. We have the compound microscope you are looking for!
Digital microscopes are great for large classroom computer combined instruction. Students can take images, videos, and more. Stereomicroscopes show 3D images vs. They are great for first tme student use. Get your students inspired with high school physical science kits, robotics, Carolina ChemKits, and much more. Teach long term earth changes in real time and study the atmosphere, weather and climate and their impact on sustaining life.
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K—8 inquiry-based, hands-on science curriculum that paves the way to deep understanding of phenomena through 3-dimensional learning. Moving to NGSS? Teaching NGSS is more than checking off standards. Thank you for your continued use of the STC Program. Keep your classroom alive with activities, information, and help in biology, biotechnology, botany, genetics, and more. Make your classroom electrifying with activities and information spanning chemistry and physics content.
Everything from equilibrium to electricity and reactions to rocketry at your fingertips. Mine activities, information, and helpful hints for ESS. Trendy 3-D special effects on movie screens grab and keep your students' attention.
Now use their fascination with mutli-dimensions to discuss visual perception, optics, and colors while studying the solar system. This demonstration is dedicated to raising your students' awareness of the air pollution created by their everyday activities.
Teach a class like forensic science where you have to apply physics, chemistry, and biology content? We have interdisciplinary activities and tips to help. This brief guide will provide you with the information you need to make a number of solutions commonly used in educational laboratories.
In this activity, students engage in a game of beanbag toss—but instead of merely keeping score, they explore statistical concepts such as mean, median, mode, and range. This author provides an excellent student lab-report format, explains how it adapts to different science disciplines, and suggests simple labs to familiarize students with it. Keep your classroom or lab safe throughout the schoolyear with lots of helpful tips, hints, and safety techniques. You have questions-we have answers.
Get general information, care guides, and product information here. Brush up on the latest instructional strategies and pedagogy with information from our teaching partners, instructional designers, and academic consultants.
Feeling the pinch from the current economy? Carolina understands. Crystal Risko Product Developer. A discussion of chemical hot and cold packs can really warm up a classroom lesson on thermochemistry. In the following activity, students use a coffee cup calorimeter to measure the heat of solution of a chemical salt using 3 different masses. If chemicals are limited, consider having half the students work with 1 chemical and half with the other.
After students have measured the heat of solution for the 3 masses, they graph their data change in temperature vs.
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