elements"? Because hydrogen has an atomic number of only “1” which means it only has one proton in its nucleus and it is the only element with only one proton in its nucleus also has one electron 2. What must happen in order for an atom to lose its electrical neutrality? In order for an atom to lose its electrical neutrality the protons and electrons would have to have an unequal number of positively charged protons versus negatively charged electrons must either gain or lose an electron 3.
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passengers boarding a bus) with the Electron Configuration Gizmo™. To begin‚ check that Lithium is selected on the PERIODIC TABLE tab. 1. The atomic number is equal to the number of protons in an atom. How many protons are in a lithium atom? ________3_____ 2. A neutral atom has the same number of electrons and protons. How many electrons are in a neutral lithium atom? ______3_______ 3. Select the ELECTRON CONFIGURATION tab. Click twice in the 1s box at upper left and once in the 2s box. Observe
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consists of a nucleus‚ which is made up of protons and neutrons. · Protons are positively charged particles. Neutrons have no charge. There is an outer layer made up of negatively charged electrons‚ which keep orbiting the nucleus in a random manner. · The number of protons and electrons are always equal in an atom. Because of this‚ the atom has got a neutral charge. · The protons and electrons weigh more or less equal and the total number of protons and neutrons put together make the atomic weight
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ELECTRONICS 1A (PHS 206) COURSE CONTENT: 1.ELECTRONS IN MATTER 2.ELECTRON EMISSION INTRODUCTION The Word Electronics derived its name from electrons in all materials. It is a branch of Science‚ Technology and Engineering that deals with current conduction through vacuum‚ gas‚ solidsmatter in general. It deals with electronic device and their utilization. INTRODUCTION contd Electronic device is that in which current flows through a matter. Such devices have valuable properties which enables
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Dynamic Chemistry Matter – Any substance that has volume & mass. E.g. EVERY THING Atom – The smallest non living thing that can exist. Atomic Structure – Particle | Symbol | Location | Charge | Mass | Proton | P | Nucleus | +1 | 1Heavy | Neutron | N | Nucleus | 0 | 1Heavy | Electron | E | Electron Shell or Orbit | -1 | 12000Light | History of the Atom – The model of the atom has changed with time. Dalton – solid shape (no subatomic particles) (indivisible particle) Rutherford
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Since isotopes have the same number of protons‚ they all have identical chemical behavior. But‚ however‚ since their neutron numbers are different the isotopes of the same element may have different radioactivity. An isotope that is radioactive is called a radioisotope like iodine‚ which is important in our health. In radioactivity‚ the nucleus of an unstable isotope or element breaks down by itself and gives off rays and particles; the ratio of neutrons to protons for stable isotopes increases for heavier
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mind* ü Metals have a high low ionization energy ü Non-metals have a high electron affinity · Atom: The 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
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The Large Hadron Collider The Large Hadron Collider is the largest‚ most powerful‚ and most expensive particle accelerator in the world. It cost 20 countries over $9 billion to build and finance the project. The Large Hadron Collider was built by CERN‚ the European Organization for Nuclear Research. CERN is composed of 20 member nations with the purpose of researching and conducting experiments on particle physics. The purpose of the Large Hadron Collider is to assist in answering fundamental
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DNA. These are all properties that all living things share. 2. What happens if an atom of an element gains or loses electrons? What happens if an atom of an element gains or loses neutrons? What happens if an atom of an element gains or loses protons? Atoms in which the number of
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colorless to pink. B. donates a proton in a proton transfer reaction. C. accepts electrons in an electron transfer reaction. D. produces hydrogen ions in solution. E. does none of these choices. 7. Ammonia‚ NH3‚ produces hydroxide ions in aqueous solution by A. donating a proton to an acid molecule. B. donating a proton to a water molecule. C. donating a hydrogen ion to a water molecule. D. accepting an electron from an acid molecule. E. accepting a proton from a water molecule. 8.
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