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- 1. Minerals
are required to build soft and hard body tissue. Without then we wouldn't exist. They also help out with the nervous system the contraction of mussels and help the blood flow properly. are classified into 2 major groups. The major elements such as calcium, magnesium, iron, iodine etc. Then the trace elements such as copper, manganese fluorine and z
2. Gallium
1871 Dmitrii Ivanovich Mendelev predicts the existance and properties of the element after zinc in the periodic table. He Gives it the name "eka aluminium". 1875 Paul Emile Lecoq de Boisbaudran discovers . Its properties closely match those predicted by Mendelev. , atomic number 31, is very similar to aluminum in its chemical properties. It does no
3. The Sequence Of Chemical Reactions
Dave Allen, Lab partner Instructor Yang February 11, 1997 INTRODUCTION This experiment was to recover the most amount of copper after it is subjected to a sequence of reactions. The copper is originally in solid form, but the reactions will turn it into free Cu+2 ions floating in solution. The ions will then be regrouped to form solid copper once
4. How Batteries Work
We use batteries everyday, we use them to start our cars and to listen to our Walkmans. I have a few questions: How do batteries work? What are the different kinds of batteries? Why do they die? Why do they lose energy when they are not used for a long time? Well I tried my best to find the best answers for these questions and a little more. Batte
5. Chromium
is a very hard, brittle, gray metal, which is sometimes referred to as Siberian red lead. It does not rust easily and becomes shiny and bright when it is polished. The shiny trim on our automobile bumpers and door handles is usually electroplated . Most comes from something called chromite which is a mixture of , iron, and oxygen. Chromite is a com