<p>Fehling's test for sugars. Five test tubes showing the colour changes observed when using Fehling's reagent (blue) to test for the presence of simple sugars. From left to right the test tubes contain: no sugar (control), 0.1 glucose solution (cloudy blue), 1 glucose solution (orange), 10 glucose solution (brown), and sucrose (no colour change). Fehling's reagent contains copper ions, giving it its blue colour. They oxidize the aldehyde group in glucose, forming solid copper oxide. The copper in the oxide has a lower oxidation state, causing the colour change. Sucrose has no aldehyde group. For the start of the reaction, see image A500/448.</p>
An easy-to-install, peel and stick wall art solution, our wall peels are perfect for dorm rooms, kids’ rooms, holidays, special events, and more. Consider ordering repeatable patterns for wallpaper, attempt your own wall mural, or display motivational artwork around the office. Stick them anywhere for a quick décor refresh or to add a splash of inspiration in your office corner.
<a href="/search/?q=wall-peels">Wall peels</a> are created from a premium matte vinyl fabric backed with strong, reusable adhesive for a super durable wall art solution. This temporary wall art solution can stick to virtually any surface. And if you change your mind later? Wall Peels are easy to remove and reapply anywhere you like.
<p>Wall peels are created with the same archival latex inks and attention to detail featured in all of our giclée wall art prints. Our full color edge-to-edge printing with long-lasting color allows each image to look its best on this unique material.</p>
<p>The holidays are over in the twinkle of an eye, and kids’ tastes can be unpredictable. But with this easy-to-install peel and stick solution, you can temporarily refresh any space in your home, easily and affordably. With the simple adhesive backing, you can even let your kids be a part of the installation process.</p>
Educational
Science
Chemistry
Andrew Lambert
Photography
