J. Dalton Dalton’s theory was based on the premise that the atoms of different elements could be distinguished by differences in their weights. His theory proposed a number of basic ideas: * All matter is composed of atom. * Atoms are indivisible and indestructible. * Different elements have different types of atoms. * All atoms of the same element are identical. * Chemical reactions occur when atoms are rearranged. * Compounds are formed by a combination of two or more
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1. Atomic and Molecular Structure a. Students know how to relate the position of an element in the periodic table to its atomic number and atomic mass. The Periodic Table organizes elements by their atomic number - from hydrogen (1) to whatever is the highest one currently known (>105). It is arranged so that similiar members fall in a list such as Chlorine Bromine etc.. The average atomic weight is usually shown with each element‚ but due to isotopes (caused buy nuclear varations)
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* Groups 6: The SMARTER approach to workplace learning SOCIAL LEARNING HANDBOOK: CONTENTS PAGE Workplace Learning Stages 4 & 5 At the beginning of this Handbook we identified 3 stages of workplace learning. We have now seen how social media is being used for learning – both for formal training but also‚ and more significantly for underpinning informal‚ workflow learning. This had led to two further stages of workplace learning emerging (see Fig 11). But there is a clear difference between
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proton and an electron? (1) They have the same masses and the same charges. (2) They have the same masses and different charges. (3) They have different masses and the same charges. (4) They have different masses and different charges. 3 The atomic mass of an element is the weighted average of the masses of (1) its two most abundant isotopes (3) all of its naturally occurring isotopes (2) its two least abundant isotopes (4) all of its radioactive isotopes 4 Which statement is true about
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History of the Atomic Model Just as we once believed that the earth was flat‚ our understanding of the atom was once extremely limited. As time passes‚ we begin to discover more and more about the world we live in. We have come to know much about the atom over the past two hundred years through the work of numerous brilliant scientists. Throughout history‚ scientists have come up with many experiments and atomic models to explain the atoms all around us‚ all leading up to our modern understanding
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been subject to more analysis and comment than the atomic bombings of Hiroshima and Nagasaki (Miles‚ 1985‚121). Scholars in the field have grappled with the vexing question of why the United States decided to use the atomic bomb near the conclusion of the Second World War. A careful study of the critical events leading up to 6 August 1945 offers many distinct explanations. Contemporary discussions on the subject matter introduce a host of theories but taken individually they are far from satisfying
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Atomic structure: scientists 1. Democritus: 1st person to think of atom (500 BCE)- philosopher Atom is the smallest piece of an element that has same properties as the element. 2. Lavisier: Law of conservation of mass/ matter • Mass can’t be created or destroy; same amount of stuff 3. Joseph Proust: Law of constant composition (law of definite Proportions) • A compound is always made of the same elements in the same ratio. 4. John Dalton: English school teacher who derived the atomic theory
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creation of one of the most destructive weapons known to humanity occurred within the United States. This weapon‚ known as “the atomic bomb‚” was used on the two Japanese cities: Hiroshima and Nagasaki‚ resulting in a death toll unprecedented by any military weapon used before and an immediate‚ unconditional surrender. Some historians believe President Truman decided to drop the atomic bomb in order to intimidate the Soviet Union whereas others believe it was a strictly military measure designed to force
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DEFINITION Classical Management Theory propounds that a manager’s foremost preoccupation is how to increase an organisation’s efficiency in order to increase productivity. Scholars of management from as early as the 19th century touted the need for managers to find that formula‚ that modus operandi‚ that would deliver positive results‚ on a sustainable basis‚ in the most efficient manner. In the process they sought to define the role(s) of a manager and although these have been altered by influences
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Assess the clam that Marxist theory no longer has any relevance for understanding modern societies. [25] Marxism was developed by the German philosopher Karl Marx and is a radical alternative to functionalism. Functionalism‚ developed by Emile Durkheim‚ was very influential in the 1940’s and 50’s but started to decline in the 1960’s. Marxism had the answers functionalism failed to give. Marxism is based on the idea that we need food‚ shelter and products in order to survive. We enter in to social
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