TEMPLATE DESIGN © GalaxC.S By Chloe Stockdale, Claire McAuley, Sonja Davey and Siobhan Bee Our Idea Research about Hoffmann Voltameter Oxygen Container Materials Needed Development of Sketches Electrodes Process Testing After coming up with the idea to separate water from oxygen, we needed to come up with a way to prove we had oxygen. We came with the idea to feed the oxygen from the voltameter to a container with a candle inside. If there is oxygen present the candle will stay alight, if no oxygen is present the candle will go out as fire/flames need oxygen to burn. With our oxygen container sketch drawn up, we have then been able to draw it into our sketches. The first sketch is only rough with the second sketch being more developed. The second sketch is nearly our final copy. To make our own version of the Hoffmann voltameter we need a list of materials to do so: 5 2litre bottles ( 3 bodies, 2 lids) 2 plastic taps (from Bunning’s) 2 small plastic connectors 1 small T connector Plastic tubing 2 Alligator clips 2 cut pieces of wire copper 2 wires with plugs for a power box Selly’s Araldite super glue For our own version of the Hoffmann voltameter we will need electrodes. We started out with 10 different types of metal, all possible electrodes, we had; Aluminium Bronze Copper Mesh Lead Carbon Steel Brass Zinc Tin Galvanized Steel After completing some extensive research we have come to the conclusion that copper metal will be the best material for conducting electricity with gold, silver and aluminium the next 3 best. We have then cut the copper available to use into thin rectangular shapes and connected them to the alligator clamps which are in place with the rest of the bottle. The electrodes used will conduct electricity in the Hoffmann voltameter that will then produce oxygen from the water in the device. The Hoffmann Voltameter gave us the first idea of we were going to produce oxygen. After researching a process we could use for our C2C assignment we found that the process of electrolysis would make oxygen and hydrogen. We found a method which we found on the internet of a teenage girl trying to achieve the same idea of us. The method includes 10 steps and a list of resources such as salt, water, a glass and wires attached to a nine volt battery. The whole process can be found on the following page with a diagram of the process made up by Claire McAuley. Main Idea: To convert water into Carbon Dioxide. We came up with the idea because even though we can land on mars, it will be pointless to try and live there if we have no oxygen to breathe. Method. 1.Cut the lids off two of the bottles. 2.On the uncut bottes cut 2 20cent coin sized holes on the bottom of the bottles. 3.Glue the cut off lids into the holes in the bottom of the 2 bottles. 4.One two lids pierce a small hole into it and place the tops into it securely. 5.On the 2 other lids cut a hole and slide the wire through the centre, attach the alligator clamps to the wire. 6.Place the copper strands onto the alligator clips, make the lid water tight with glue (be careful to keep the glue in the centre) make sure the lids can still be screwed on. 7.Cut holes into the sides, of the 2 bottles, that are the width of the plastic connector. 8.Make sure the connectors fit the holes, then glue them. 9.Connect the tube to the connectors and the ‘T’ connector.