physical chemical properties essay Oakland Schools SCoPE Science Assessment Packet 7th Grade Unit 2 – Physical and Chemical Properties and Changes of Matter Assessment Packet Grade 7‚ Unit 2: Physical and Chemical Properties and Changes of Matter Overview This packet contains a set of assessment resources to be used with the Physical and Chemical Properties and Changes of Matter Unit of the 7th grade Scope Science Curriculum. A test blue print is
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is more than the number of protons. When atoms share electrons of nonmetals then a covalent bond is formed inside the molecule. Monatomic elements are elements that only contain one type of atom. An example of this would be the noble gases‚ such as Helium or Neon. Diatomic elements are molecules that contain two atoms. An example of this would be H2‚ F2‚ or Cl2. Diatomic elements do not have to both be the same element. Polyatomic elements are molecules that contain many types of atoms. An example
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* α and β radiation is in the form of particles * γ radiation is in the form of waves-kind of like light but higher frequency . Nuclear Decay * Alpha particles consist of two protons and two neutrons‚ identical to the nucleus of a helium atom. * A sheet of paper or a person’s surface layer of skin will stop them. * Alpha particles are only considered hazardous to a person’s health if they are ingested or inhaled and thus come into contact with sensitive cells such as in
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found out that it actually spends on its side and is called by some people the “sideways planet”. Nights on some parts of Uranus actually last about 40 years because of the way it spins. Uranus’s atmosphere is composed of primarily of hydrogen and helium and only a small amount of it is methane and traces of water which is what Uranus gets its blue green color from (methane gas). Uranus has no solid surface and was once considered one of the bladder looking planets. Uranus was also revealed as a dynamic
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Flame Test Laboratory Report Introduction The purpose of this lab is to observe and identify metallic ions‚ using flame tests. The traditional flame test originated when Robert Bunsen invented the Bunsen burner to test two new alkali metals he and his partner had discovered. “A flame test is an analytic procedure used in chemistry to detect the presence of certain elements‚ primarily metal ions‚ based on each element’s characteristic emission spectrum” (Flame Test 1). Using this test‚ an element
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cheap and appeal to a majority‚ i.e. reality television. The downsides to reality television are merely certain aspects of modern‚ western culture which are everywhere: the cult of celebrity‚ the spread of information and the consumer as star. Helium is essentially the reality television of the literary world. We dress it up as something more meaningful‚ as an intellectual pursuit‚ but the essence is the same. It is the replacement of experts in a field (either writers or actors) with amateurs
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In this industry‚ you can either settle for less or strive to be better. In Achatz’s case‚ he pushed himself to do more and the end results were outstanding. From working for his parents restaurant‚ to the opening of his first restaurant‚ he never doubted himself. Grant Achatz‚ is the only American chef to master the art of Molecular Gastronomy. People sought after progressive cuisine to at least experience it once. This family man and cancer survivor is a prime example of heroism. With knowledge
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com/facts_6067550_homeostasis-blood-pressure.html. Prater‚ A. (2008‚ September 1). How blood flows through the heart. Helium. Retrieved July 17‚ 2013‚ from
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Calculate the radius of Sirius‚ in solar radii. Optional Question: Globular Cluster 1. a) If each kilogram of hydrogen in a star is known to release 7x 1014 J and it is known that a star at this stage has used 20% of its hydrogen through fusion to helium‚ the age of the heaviest star can be worked out from its mass and luminosity. What is the expression for finding this age? b) Stars in a globular cluster branch (turn off) from the main sequence at about 1 magnitude higher than the Sun‚ corresponding
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Detailed Report on Manufacturing of 600 mw Stator Winding bar of Turbo Generator Submitted to: Mr. A.K. Dhiman Bhupesh Kumar Singh (B.TECH-III) AN ABSTRACT With increasing demands of per capita electrical consumption‚ the requirements of various power sources are also increasing at
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