The Atomic Structure Atoms contain electrons which travel along electron shells‚ surrounding the nucleus that contains nucleons such as protons and neutrons. Electrons‚ neutrons and protons all make up an atom‚ they are called sub-atomic particles. Protons – has a relative charge of 1+ and a relative atomic mass of 1 Neutrons – are neutral‚ therefore the charge is 0. Also has a R.A.M of 1 Electrons – has a negative charge (1- )‚ and has a R.A.M of 1/2000
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The Big Bang Theory What is the Big Bang Theory? The Big Bang is the dominant (and highly supported) theory of the origin of the universe. In essence‚ this theory states that the universe began from an initial point or singularity which has expanded over billions of years to form the universe as we now know it. In 1959 a survey was conducted of scientists across America concerning their understanding of the physical sciences. One particular question asked “What is your concept of the age of
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the electron cloud (contains very light‚ moving particles) Subatomic particles: 1.Protons (found in the central nucleus) 2.neutrons (found in the central nucleus) 3.electrons (spin rapidly in a cloud around the central nucleus) 2) How does the Atomic Mass # differ from the Atomic #? The mass # is determined by adding together the number of protons and neutrons in the nucleus. The atomic # itself is what defines the element and also represents the number of protons in the nucleus. 3) What
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Chromium‚ Chromiuim‚ Chromium‚ Oh my oh my‚ sweet Chromium What did Nicolas Louis Vauquelin say when he first discovered you? Did he know that you were going to have 24 protons and exactly 24 electrons? Or even 28 neutrons… No? So how did the world figure you all out? Was it because you were such a beautiful silvery transition metal? Or maybe it was your mesmerizing amount of atomic mass… Ya’ know‚ it being 51.996. Are other elements attracted to you because you are simply‚ Odorless
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the distinct forms that different phases of matter take on. Four states of matter are observable in everyday life: solid‚ liquid‚ gas‚ and plasma. Further states are possible but do not naturally occur in our environment: Bose–Einstein condensates‚ neutron stars. Other states‚ such as quark-gluon plasmas‚ are believed to be possible. For a complete list of all exotic states of matter‚ see the list of states of matter. Historically‚ the distinction is made based on qualitative differences in properties
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BLACK HOLE Introduction: "A luminous star‚ of the same density as the Earth‚ and whose diameter should be two hundred and fifty times larger than that of the Sun‚ would not‚ in consequence of its attraction‚ allow any of its rays to arrive at us; it is therefore possible that the largest luminous bodies in the universe may‚ through this cause‚ be invisible." -- Pierre Laplace‚ The System of the World‚ Book 5‚ Chapter VI (1798). Evolution of Stars 1. Clouds of Hydrogen begin condensing
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Electrical and What it is The work of an Automotive Service Technician also known as a Mechanic has changed from normal mechanical repair to a high knowledge and very technical job. Today‚ integrated electronic systems and complex computers run and maintain vehicles. They also measure their performance while on the road and can adjust to certain conditions. Technicians must have a good base of knowledge about how vehicles components work and interact‚ as well as the capability to work with electronic
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however‚ are ever changed into atoms of another element as a result of a chemical reaction. Important changes were revised from his theory like his atoms are indivisible which is wrong since atoms can be divided into subatomic particles like Protons‚Neutrons‚ and Electrons. Next‚ is his theory that Atoms of all elements are the same‚ this is proven wrong by the discovery of isotopes. Lastly‚ his theory that elements can’t be transformed into other elements‚ which is also proven wrong
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in this list that can be seen with an ordinary desk microscope? 1. 2. 3. 4. Cells. Cell nucleus. Atoms. Chain molecules‚ such as proteins. Atoms In our model of scale‚ remember that the BB represented an atom. Electrons Hydrogen Helium Neutrons Protons As a class‚ identify the atoms represented here and label the sub-atomic particles. Carbon OxygenPhosphorous Calcium What elements are represented here? Use the Periodic Table on the wall to identify these atoms. What does the term “valence
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basic unity of an element which still retains the elements properties · Atomic number: the unique number of protons in the nucleus of a particular element · Isotope: Atoms of the same element which contain a different number of neutrons · Periodic law: The chemical and physical properties of the elements repeat in a regular‚ periodic pattern when they are arranged according to their atomic number. · Periodic trend: a pattern that is evident when elements are
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