fresh start for our energy sources and our environment. Stars are made from a mix of gases‚ and are powered by chemical energy and nuclear fission. Nuclear fission is a atomic reaction that happens in the core of stars‚ mostly converting hydrogen to helium‚ but it requires a lot of energy. Nuclear burning is
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Fifteen to twenty billion years ago‚ the universe arose as a cataclysmic eruption of hot‚ energy-rich sub-atomic particles. Within seconds‚ the simplest elements (hydrogen and helium) were formed. As the universe expanded and cooled‚ material condensed under the in-fluence of gravity to form stars. Some stars became enormous and then exploded as supernovae‚ releasing the energy needed to fuse simpler atomic nuclei into the more complex elements. Thus were produced‚ over bil-lions of years‚
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Assignment: SCI103 Phase 1 Lab Report Title: Measuring pH Levels Instructions: Enter the Virtual Lab‚ and conduct the experiments provided before going out into the virtual field for additional research. Please type your answers on this form. When your lab report is complete‚ submit it to the Submitted Assignments area of the Virtual Classroom. Part I: Answer the following questions while in the Phase 1 lab environment. Section 1: You will be testing 4 known solutions for pH levels using
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though it’s very common element in the universe. In the earth’s atmosphere‚ neon only comprises 0.0018 percent of the volume. On the earth‚ neon is always present as a gas. Neon has three stable isotopes‚ and it’s the second lightest noble gas‚ after helium. Two different types of neon are commonly used in the world. Neon glow lamps are tiny; they have been used as power on indicators. Neon is not a very common element‚ but the places it is most abundant is in the earth’s atmosphere‚ and trapped with
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Dana Leamaster February 13‚ 2013 Informative Speech: The Big Bang Theory How did the universe begin? How did matter come to exist? We all know that the universe exists‚ however‚ this knowledge alone has not satisfied mankind’s quest for further knowledge and understanding. Much time has been spent looking for some clues. Most of what we know is still only a speculation. The three topics I’d like to discuss are what exactly the Big Bang theory is‚ the first atoms‚ and the age of
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made by the historical reason for grouping elements in families and the electron configurations of the elements. Group 18 only contains noble gases. If you take a look at the electron configurations of each element all end in p⁶ (with an exception of Helium which is only s²). Neon’s electron configuration ends in 2p⁶. The two represents the period it is in and the six tells us that it is in the sixth column of block “p”. While noble gases are grouped for being such‚ their electron configuration also
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The universe is made up of 93.5% of Hydrogen atoms‚ 6.3% of Helium and 0.2% of other elements. By looking at the spectrum of hot stars‚ upper solar atmosphere and solar wind‚ an abundance of Helium is determined. Only from the 1920s there were methods of calculating what elements were present in a gas by just observing its spectrum‚ due to the fact that different elements absorb and emit different wavelengths of light. (2) Gamow thought that nuclear fusions took place in the first minutes after
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Nobel gases are a group of six elements in group VIIIA of the periodic table; they are in the column farthest to the right. It is a collection of five elements: argon‚ helium‚ krypton‚ neon‚ radon‚ and xenon. Unlike most elements‚ the noble gases are monatomic‚ which means the element is a single atom instead of being in pairs or a combination. The atoms have stable configurations of electrons. In other words‚ under normal conditions they do not form compounds with other elements. They got there
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" Neon is chemically inert and forms no uncharged chemical compounds. Neon is also one of those special elements that holds no negative environmental impacts. Neon is an element that is part of the Noble Gas Group. The Noble Gas Group is made of helium‚ argon‚ krypton‚ xenon‚ radon‚ and of course Neon. These gases are in Group 18 of the periodic table. Neon is also in Period 2; all elements in the same period all have similar properties. The periodic table is a table that is able to show us how
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nucleus of the simplest atom - hydrogen. A proton and a neutron formeddeuterium‚ which then formed helium. (77%hydrogen‚ 23% helium) 7.Describe what must have happened after the Big Bang. The expanding universe was foggy and opaque‚ containing energy in the form of radiation.300 000 years after the big bang‚ the universe dropped to 3000°C. This allowed the electronsto be captured by hydrogen and helium nuclei to form new atoms and elements‚ and the fogstarted to clear. As it expanded‚ radiation took
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