There are two versions of each lab, one with a ten-question conclusion and one with directions for a full lab report. This way the teacher has the option! Each lab is two pages to allow for one two-sided handout.
You can buy this lab book for $23 at amazon.com or lulu.com. It will take 1-2 weeks to get to you -- Order Now. It’s a great resource, especially with the 2016-2017 science budget being used up!
*Some of you have already purchased my lab book – be sure to check out Page 141 !
“Not only does the use of disposable plastic water bottles hurt your wallet, it also increases pollution, wastes energy, and surprisingly wastes water. Only 23% of all plastic in America ends up in a recycling bin, meaning over $1 billion worth of plastic is wasted a year. Just the production of water bottles (not including transportation) uses enough oil annually to fuel 1.3 million cars for an entire year, and a single bottle requires three times more water to manufacture than to fill it. “ https://www.theodysseyonline.com/ooho-the-water-bottle-the-future-almost-here
“Skipping Rocks Lab is an innovative sustainable packaging start-up based in London. We are pioneering the use of natural materials extracted from plants and seaweed, to create packaging with low environmental impact.
Our first product, Ooho, will revolutionize the water-on-the-go market. The spherical flexible packaging can also be used for other liquids including water, soft drinks, spirits and cosmetics, and our proprietary material is actually cheaper than plastic.”
“ Ooho! is a sustainable packaging alternative to plastic bottles and cups, made from a seaweed extract,' they said on their crowdfunding page.
It is entirely biodegradable and so natural you can actually eat it.
Ooho sachets are flexible packets of water, drunk by tearing a hole and pouring into your mouth, or consumed whole.
Our packaging is cheaper than plastic and can encapsulate any beverage including water, soft drinks, spirits, and even cosmetics.
The Ooho sphere has a double gelatinous membrane.
It is made using a mixture of sodium alginate, taken from brown algae, and calcium chloride. “
Here is a 12-minute video of one of the founders, Rodrigo Garcia Gonzalez, talking about the need for this product, Ooho!, and how a team of chemists and physicists worked on this problem. His accent is rather strong so it might be difficult to understand at times, but it’s a very interesting talk:
“There are [other] edible containers on the market. Wikipearl, sold in a few Whole Foods locations, contains yogurt and ice cream creations in packaging made from calcium ions and particles of nuts, chocolate, and seeds that is supposed to be part of the "culinary experience," its developer and biomedical engineer David Edwards told Wired in August 2013.”
“To create the bottles, spheres of ice are treated with a liquid form of the seaweed-derived membrane. When the membrane solidifies and the water melts, a portable, eco-friendly serving of packaged water remains. Each orb costs only 2 cents to construct.”
“Designers Rodrigo García González, Guillaume Couche and Pierre Paslier call their creation ‘Ooho,’ a gelatinous blob that is actually a membrane that encapsulates water like a bladder. When you’re thirsty, just puncture the membrane and drink. Or, if you also have an appetite, just pop a bite-sized Ooho in your mouth and chomp down for a burst of hydration. The gooey membrane, made from brown algae and calcium chloride, is edible, hygienic and biodegradable.
The Ooho globule is formed through a process called ‘spherification,’ a methodology first pioneered in 1946 and still utilized by some chefs in modern cuisine. Water is frozen into ice before being encapsulated to ease the process and prevent the water from mixing with the membrane ingredients. The bag-like containers are also incredibly cheap — each one costs just 2 cents to make, and they could even be concocted at home.
‘Anyone can make them in their kitchen, modifying and innovating the recipe,’ said co-designer García. ‘It’s not DIY but CIY — cook it yourself.’
Here is a 4-minute video of a young Indian boy making biodegradable plastic:
There has been criticism of this development:
“…there are a few problems with the company’s approach. Skipping Rocks Lab’s current mission to make Ooho a staple of festivals, marathons, and other outdoor events is a great start, since those are situations in which single serving beverages without waste are well suited, but the wider goal of becoming ‘the global solution to water and drinks on-the-go’ is really an impossible task.Unlike bottles, single-gulp water is not something most of us need or would even find a way to use on a daily basis. As demonstrated in videos showcasing Ooho being drunk, the membrane is pretty delicate, and certainly not something you’d toss in a bag or backpack on its own. And because the membrane is edible, if Skipping Rocks envisions Ooho being sold at grocery stores it will mean selling it within some kind of other external packaging, completely negating its ‘packaging free’ mission.”
This link is to several other videos preparing bio-degradable plastics. One idea for a Homework or Extra Credit assignment is to have students view 3 videos and write a short report including: summary if each method provided, the student’s ranking of the three methods and a brief paragraph of explaining the ranking:
Also, students might get Extra Credit for reviewing videos not reviewed by other students.
*This Blog contains several entries that would be helpful to your chemistry classroom. Check out the Topic List to help you to find past Blog entries.
Also, Write To Me about your successes, challenges, or questions in the Chemistry Classroom.
Remember, buying a copy of the lab book Chemistry on a Budget can be very useful to your Chemistry classroom with labs and class article ideas.
Have a great weekend!