Key Terms and Important People Coptic: Ancient Egyptian language‚ spread to the lower Nile river valley Cataracts: churning rapids‚ it was impossible to travel all the way upstream because of the cataracts Delta: formed in Lower Egypt‚ it is where the Nile River spreads and drains into the Mediterranean Sea. Upper Egypt: the strip of land that extends between Nubia and towards Lower Egypt Lower Egypt: North most region of Egypt‚ between Upper Egypt and the Mediterranean Sea. Nubia: region along
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References: _ Chemmat 221 lab manual (Semester1‚ 2013). _Reardon C.(2011)‚ Metallurgy for the non-metallurgist‚ p:67. _ Kaufman‚ John (2000). Introduction to aluminum alloys and tempers 10 | 37.9 ‚ 42.841.6 ‚ 46.2 | 42.2 | 44.9 ‚ 46.448.4 | 46.6 | 47.6 ‚ 44.3 43.8 | 45.1 | 55.6 ‚ 57.658.0 | 57.1 | 20 | 40.7 ‚ 40.643.8 | 41.7
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5 billion years ago the earth came into existence around? 40‚000 years ago modern human beings arrived around? before writing the term ’’prehistory’’ refers to the period before? 1.6% In regard to genetic makeup and body chemistry‚ the difference between humans and apes is? australopithecus as early as five million years ago‚ which of the following flourished in east Africa? "the southern ape" what does australopithecus mean? intelligence and language skills the most important development of
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but also on the body tissue. Chromium typically bears a charge of +3 or +6 which is a highly- oxidized state for a metallic element. According to the Agency for toxic Substance and Disease Registry ‚ chromium is used in 3 main industrial areas: metallurgy ( manufacture of different metals and metal materials)‚ refractory ( heat-resistant applications) and other chemistry applications. Basically chromium is used specifically for making stainless steel and other different metal alloys also used in
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were very curious and incompetent in comparison to them. It is said that many of the discoveries that were introduced during the 18th and 19th century in the Europe were priory‚ enforced and eradicated by the Ming’s (i.e. paper currency‚ iron ore metallurgy‚ irrigation methodology‚ Ship building etc). The question comes as to why did they stop? If we see the history of china‚ it has always been a Confucian country with high bureaucracy. They were more secularist and rigid with the state policies.
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Africa. Originating from Nigeria in the Niger River Valley‚ the Bantu migrated south and then spread to both the east and west. The Bantu laid the foundation for Sub-Saharan African societies. They spread agriculture‚ animal domestication‚ iron metallurgy‚ and cultural development throughout southern Africa. Various forms of government have developed as a result of the Bantu migrations. They also contributed to the start of many societies‚ including the Swahili city states. The adaptations the Bantu
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Chemistry (the etymology of the word has been much disputed)[1] is the science of matter and the changes it undergoes. The science of matter is also addressed by physics‚ but while physics takes a more general and fundamental approach‚ chemistry is more specialized‚ being concerned with the composition‚ behavior (or reaction)‚ structure‚ and properties of matter‚ as well as the changes it undergoes during chemical reactions.[2] It is a physical science which studies various substances‚ atoms‚ molecules
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Chemistry 3202 Unit 4 Electrochemistry 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. Define the terms: oxidation and reduction in terms of loss or gain of electrons. P.714 Identify electron transfer in redox equations. P.714 Identify oxidation and reduction half-reaction equations in an oxidation-reduction (redox) equation. P.715- 716 Identify a redox equation as the sum of the oxidation half-reaction and the
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elements. Without proper utilizations of such‚ there would not have been a modern world and other science. Chemistry affects all science whether positively or negatively‚ and as the production of the world‚ it has shaped history. The discovery of metal metallurgy was the beginning of modern age and that was in approximately 7000 BC. It was then when the discovery of copper began to shape human life. Crude knives and sickles were made from the material and later‚ in 2800 BC‚ the first true bronze age‚ was
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Noble Gas | Uses | Property | Argon | Light bulbs | Doesn’t react with the metal filament | Helium | Used with O2 for deep sea dives | Low solubility of helium in the blood. | Helium | To inflate the tyres of large aircraft | Non-flammable | Helium | To fill airships and weather balloons | Low density‚ does not burn | Neon | In advertising signs because it glows red when electricity passes | Conductor of electricity at high voltage | Krypton/Xenon | In lamps used in photographic flash
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