ATOMIC STRUCTURE AND THE PERIODIC TABLE Theoretical change with respect to Dalton’s atomic theory 1. In 1803‚ atomic theory was revived by John Dalton a) matter is made up of tiny particles called atoms which cannot be created‚ destroyed or split b) all atoms of one element are identical:- same mass and same chemical properties c) a chemical reaction consists of rearranging atoms from one combination to another. d) When elements combine to form compounds‚ small whole numbers of atoms
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A young Venetian‚ Bassanio‚ needs a loan of three thousand ducats so that he can woo Portia‚ a wealthy Venetian heiress. He approaches his friend Antonio‚ a merchant. Antonio is short of money because all his wealth is invested in his fleet‚ which is currently at sea. He goes to a Jewish money lender‚ Shylock‚ who hates Antonio because of Antonio’s anti-semitic behaviour towards him. Shylock nevertheless agrees to make the short-term loan‚ but‚ in a moment of dark humour‚ he makes a condition - the
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The Formation of the Solar System is one of the oldest problems in science. There have been many theories on how the Solar System formed‚ but there is only one theory that has been accepted. That would be the nebular theory. Also known as the nebular hypothesis and solar nebula hypothesis. The nebular hypothesis is a model that explains the evolution of the Solar System. Also‚ the nebular hypothesis is the most accepted model in the field of cosmogony. This model explains subjectively many features
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The Solar System The solar system still to this day one of the most fascinating subjects of study in the science world. In our time‚ we are one of the first generations to see the planets of our solar system up close‚ and we have been able to view evolution of these planets through time. Our solar system consists of a middle aged star called the Sun‚ 9 planets‚ about 100 moons‚ thousands of asteroids‚ millions of icy bodies‚ and many comets revolving around all of it. We can begin by looking
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positive electric charge of 1 elementary charge. The name proton was given to the hydrogen nucleus by Ernest Rutherford in 1920. The concept of a hydrogen-like particle as a constituent of other atoms was developed over a long period. As early as 1815‚ William Proust proposed that all atoms are composed of hydrogen atoms‚ based on a simplistic interpretation of early values of atomic weights ‚ which was disproved when more accurate values were measured. In 1886‚ Eugene Goldstein discovered canal rays and
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Exemplar for internal assessment resource 2.5B Physics for Achievement Standard 91172 Exemplar for Internal Assessment Resource Physics Level 2 Resource title: Atomic FAQ This exemplar supports assessment against: Achievement Standard 91172 Demonstrate understanding of atomic and nuclear physics Student and grade boundary specific exemplar The material has been gathered from student material specific to an A or B assessment resource. Date version published by Ministry of Education
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1. Which of the following is not one of Kepler’s Laws of planetary motion? A) As a planet orbits the sun‚ it sweeps out equal areas in equal time. B) The closer a planet is to the sun‚ the slower it moves in its orbit. C) A planet’s orbit is an ellipse‚ with the sun at one focus. D) The more distant a planet’s orbit is from the sun‚ the longer it takes to complete an orbit. Table for Individual Question Feedback Points Earned: 1.0/1.0 Correct Answer(s): B 2. What are the three
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Solar System For Households As the development of technology is flourishing‚ fossil fuels are unceasingly depleted for enormous generation of energy. With limited resources‚ alternative forms of renewable energy are emerging. Among them‚ solar power has been growing at a blistering pace in recent years. It sparks controversy among different parties. Some people applaud this method saying it is more environmentally friendly; while some others express resentment on the astronomical cost of building
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Economic effect of Solar Panel Technology on our Society. Solar energy and its use isn’t new to the world. It has been used by various societies beginning from 7thCentury B.C‚ when the sun’s heat was concentrated by glass and mirrors to light fires. Today‚ we have everything from solar-powered buildings to solar-powered vehicles. By and large solar technology has some environmental‚ economic‚ psychological and ethical implications for our society. Actions
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The objects in the asteroid belts that are contained within the Solar System affect life on Earth today. These asteroid belts are the main asteroid belt and‚ the Kuiper Belt. Since these belts contain so many objects‚ there is diversity present within the objects. The asteroid belts consist of many categories of asteroids‚ the sizes of which‚ can vary greatly‚ ranging from a few meters to miles long. However‚ the mass of all discovered asteroids is still less than Earth’s mass. This is logical since
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