How to make simple astrolabe, Science Fair Projects Introduction A Simple Astrolabe The astrolabe is an ancient device, long used to measure latitude and act as an aid to navigation. Historians believe that the first astrolabes were devised by the Ancient Greeks, with astronomers such as Apollonius (c. 262 BCE – c. 190 BCE) and…
How to make Conductivity Tester, Level: Elementary/Secondary Concept: Equipment which can distinguish good conductor from insulator Introduction: Using this equipment, we can check whether a substance is a good conductor or not. There are two types of conductivity tester. One is L-type, which has a LED and it emits light when the test substance is…
How to Make a Purple Cabbage pH Indicator Level Primary, Elementary Concept We use litmus, phenolphthalein and bromothymol blue as pH indicator. Instead of them, we can make simple pH indicator by purple cabbage. Materials purple cabbage(one-quarter), kitchen knife, cooking pan, water, bottle, and electric heater or gas range Procedure Cut purple cabbage into small…
Activated Carbon Battery cell is an easy DIY project that can be made at home by using aluminum foil and the activated carbon. Activated carbon is used in the battery to increase the efficiency of dry cells with less weight and low energy density. Materials need to build Activated Carbon Battery cell Aluminum foil activated…
Experiment with Deoxidation of carbon dioxide,Chemistry Experiment Difficulty Level Secondary. When an organic compound burns, carbon dioxide is produced. The property of the carbon dioxide is no combustion. It is used for the gas of extinguisher. Most materials are extinguished in the carbon dioxide gas.However, magnesium takes oxygen from carbon dioxide and burns.Students are learning…
Chemistry experiment electroplating What is Electroplating: Electroplating is a process that uses electric current to reduce dissolved metal cations so that they form a coherent metal coating on an electrode. Introduction Electroplating is a common industrial process. By applying an electric current, a layer of metal such as copper or nickel can be deposited onto…
Build Your Own Voltaic cell Level Elementary, Secondary What is voltaic cell? A voltaic cell is an electrochemical cell that uses a chemical reaction to produce electrical energy. The important parts of a voltaic cell: The anode is an electrode where oxidation occurs. The cathode is an electrode where reduction occurs. We can make an…
How to make alum crystal Level Elementary Concept of alum crystal There are many pure substances which make the peculiar shape crystals when these become the solid. Let’s make the alum crystal which can do in short period. Materials required for alum crystal alums potash (KAl(SO4)212H2O)110g, string, straw, paper, thermometer, pan, plastics container, glass cup,…
Elements, Compounds and Mixtures Question 1: Say some names of mixtures in daily life. Question 2: Say some names of pure substances in daily life. Experiment 1 Materials: charcoal, filter paper, funnel Procedure: Fill half a glass with water. Put one table spoons of carbon activated (charcoal) and stir. Take a circular filter paper….
What is oxygen? oxygen is a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Oxygen forms about 20 percent of the earth’s atmosphere, and is the most abundant element in the earth’s crust, mainly in the form of oxides, silicates, and carbonates. How to Make…
Build Your Own Fruit electric cell Concept It is possible to make electricity with the fruit and the vegetable. A small current makes the lighting of light emitting diode (LED). Materials Fruit or vegetable (grapefruit, lemon, orange, and radish, etc.), coppers and zinc plates, light emitting diode (LED), conducting wire, clips, and sandpapers Procedure (1)The…
How can electricity be produced by a lemon? A lemon battery is a simple battery made for the purpose of education. Typically, a piece of zinc metal (such as a galvanized nail) and a piece of copper (such as a penny) are inserted into a lemon. The lemon contains citric acid, which will cause the…