This to That (Glue Advice) TAP Plastics. Alairbattery. Online : Secret ink smorgasboard. Thin layer chromatography for kids. In this experiment we'll use home made thin layer chromatography plates to analyze black pen ink and compare components of this ink to other colored marker inks.
Our hypothesis is that black ink is actually a composition of many color inks and we can separate them and find colored markers correspondent to each ink contained in the black marker. We'll conduct our ink chromatography experiment in two stages. In stage one we'll find if black color ink is a combination of many inks. If this is true, in stage two we'll try to find if components of black marker are the same as the inks of other colored markers. For this experiment you'll need (Materials and equipment): Water based marker pens. Experiment setup: Define origin line on TLC plate. Draw small dot on the origin line of the plate. Note: You might want to experiment with different solvents. Solvent chamber should pe placed on horizontal surface. As plate develops you should see something like this:
Thames & Kosmos. 16 Wild Materials and technologies from Inventables - Gadgets a. Sugar Glass. Common table sugar is also called sucrose.
It is a disaccharide (two sugars) of glucose and fructose, with the molecular formula C12H22O11. The glucose and fructose are connected by a single oxygen atom. By applying heat and an acid (cream of tartar), you can break the bond between the saccharides. More on that later. Sugar is hygroscopic which means that it really likes water. In theory, you can make sugar glass with just sugar, water and heat, but it will be very unstable as you make it, and very likely to burn or flash crystalize. See the following links on Sucrose for more information: HHO Production with 9 volts battery - Instructables - DIY, How T.
Mr. Kent's Regents and AP Chemistry Pages. EC/TDS/PPM Meter. TDS is the measuring of the amount of salts in a solution.
For alot of applications the amount of salt is indicitive of the levels of other stuff in a solution. TDS/PPM meters sold for gardening and aquariums figure the amount of salt in Parts Per Million by measuring the Electrical Conductivity of the solution under test. So a PPM/TDS meter is a EC meter that converts the EC value into PPM values.
There are alot of descriptions online about why and how to measure PPM/TDS or EC so google for them if you want alot more details. EC is a measure of Electrical Conductivity from two probes 1cm apart. 1 EC is = 1 microsiemens, to convert from EC to siemens multiply by 1E-6. The number 500 used to convert between PPM and EC is called the Conversion Factor. If EC/PPM is just measuring the Conductance (or resistance) then why not use a volt/ohm meter directly?? If your looking for more information you can probably find it on the Cole Parmer site on EC meters. How to Make Calibration Solutions. How to Start Fire with Water! - Instructables - DIY, How To, off. SODA CAN HYDROGEN GENERATOR : intro.
Make Hydrogen On Demand from Activated Aluminum and Water.
This invention has been patented! I use a drop of liquid metal that I bought from eBay and aluminum from a soda can to produce hydrogen from water. This reaction solves the problem of hydrogen storage for the hydrogen economy. Energy dense activated aluminum acts as the storage medium, liberating hydrogen on demand when exposed to water. After the exhaustion of the reaction, the resultant aluminum oxide (alumina) is shipped to a power generator plant that reduces it back to aluminum. Liquid metal is available here: New process generates hydrogen from aluminum alloy to run engine. A Purdue University engineer has developed a method that uses an aluminum alloy to extract hydrogen from water for running fuel cells or internal combustion engines, and the technique could be used to replace gasoline.
The method makes it unnecessary to store or transport hydrogen - two major challenges in creating a hydrogen economy, said Jerry Woodall, a distinguished professor of electrical and computer engineering at Purdue who invented the process. "The hydrogen is generated on demand, so you only produce as much as you need when you need it," said Woodall, who presented research findings detailing how the system works during a recent energy symposium at Purdue. The technology could be used to drive small internal combustion engines in various applications, including portable emergency generators, lawn mowers and chain saws.
The process could, in theory, also be used to replace gasoline for cars and trucks, he said. "This is exactly the kind of project that suits Discovery Park.