Hydrophobic substances –. III. Acids and Bases A. An acid is any substance that increases the H+ concentration of a solution. B. Acids are proton donors 1. An acid is a substance that dissociates in solution to yield hydrogen ions (H+) 2. H+ = one proton C. A base is any substance that reduces the H+ concentration of a solution D. Bases are proton acceptors E.
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“[f]ictional detectives are often loners‚ but being women makes them doubly alone”. Saga and Martin challenged perceptions of male/female emotional stereotypes. Martin’s chaotic personal life is a mess. He himself seems unable to control his libidinal instincts. On the
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Collins BBA 484 Global Strategies Dr. Laura Pogue April 3‚ 2006 Strategic Plan Selection Proton is currently operating in 50 countries. The company is thinking of exporting to places like Iran‚ Syria‚ China and Indonesia. In order for the company to become global it will need to think about expanding its business to markets such as South America where they are not currently present. Proton should also consider expanding their manufacturing sites to each country in which they operate so
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understand the importance of preserving the heritage of Northern Europe. Asatru is a modern day religion that is based on the belief structure found in Nordic mythology. What we know of the old Nordic traditions was derived from three main sources: the Sagas‚ the Eddas and the Rune Stones that are littered all across Northern Europe. The Eddas are a collection of poems that are the main source of the legendary stories that define Nordic mythology as we know it today. These poems can be found in a manuscript
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Atoms and the Periodic Table Chapter 2 Atoms and the Periodic Table / Elements and the Periodic Table * An element is a pure substance that cannot be broken down into simpler substances by a chemical reaction. * Each element is identified by a one- or two-letter symbol. * Elements are arranged in the periodic table. * The position of an element in the periodic table tells us much about its chemical properties. Atoms and the Periodic Table / Elements and the Periodic
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1 1 The nucleus of one of the isotopes of nickel is represented by 60 Ni. 28 Which line in the table correctly describes a neutral atom of this isotope? number of protons A B C D 28 28 60 60 number of neutrons 32 60 28 32 number of orbital electrons 28 28 28 32 2 A nucleus of bohrium x Bh decays to mendelevium y emissions. bohrium x Bh → dubnium + α y → lawrencium + α 255 Md 101 by a sequence of three α-particle → mendelevium 255 Md + α 101 How many neutrons are there in a
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The evolution of the early universe was the aftermath of the big bang. The early stages of the universe evolved which lead to the creation of matter and the separation of what is now known as the four fundamental particles of the universe. The creation of matter in the early universe was aided by the four fundamental forces‚ the strong force‚ the weak force‚ the electromagnetic force and the force of gravity. The standard model includes the three of the four fundamental forces excluding gravity
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ordinary chemical or physical means - Each specific type of atom is a chemical element Three Subatomic Particles: - Protons – Positive (+1)‚ found in nucleus‚ same number as electrons - Neutrons – Neutral (0)‚ found in nucleus‚ number can vary - Electrons – Negative (-1)‚ found in orbitals‚ same number as protons Atomic Nucleus: Center of atom where protons and neutrons are confined‚ entire atom has no electric charge Orbitals: - Areas in which the probability of finding an
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The scientific definition of an atom has changed a lot throughout history. Currently‚ the atom is known as the basic unit of a chemical‚ but there was a time when that was not known among scientists. There were multiple scientists that contributed to the creation of the first Atomic Theory: Democritus‚ Antoine Lavoisier‚ Joseph Proust‚ and John Dalton. Dalton took the information that he had taken from the three scientists prior to him and put everything into one theory. The Atomic Theory is the
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The basic particles of negative charge are called electrons. Each type of atom has a certain number of electrons and protons that distinguishes it from the atoms of all other elements. For example‚ the simplest atom is that of hydrogen‚ which has one proton and one electron‚ as shown in Figure 1–2(a). As another example‚ the helium atom‚ shown in Figure 1–2(b)‚ has two protons and two neutrons in the nucleus and two electrons orbiting the nucleus. Atomic Number All elements are arranged in
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