Reading Log Chapter 4 - Jacob Zipperstein Reading Log...

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Reading Log Chapter: 4 The Structure of the Atom Section 4.1 Early scientist concluded that matter was composed of things such as earth, water, air, and fire. They also knew that matter could be endlessly divided into smaller and smaller pieces. Unfortunately, they could never test their theories validity Democritus – first person to propose idea that matter was not infinitely divisible Figure 4-2 He also believed that atoms could not be created, destroyed, or further divided. Proposed concept of the atom nearly two thousand years ago Matter is composed of empty space through which atoms move Atoms are solid, homogenous, indestructible, and indivisible Different kinds of atoms have different sizes and shapes. The different properties of matter are due to size shape and movement of atoms Apparent changes in matter result from changes in groupings of atoms and not from changes in atoms themselves. Aristotle – Figure 4-3 One of the most influential philosophers Wrote extensively on many subjects, including politics, ethics, nature, physics, and astronomy Most of his writings have been lost through the ages John Dalton – He was a school teacher in England Figure 4-4 Daltons Atomic Theory All matter is composed of extremely small particles called atoms All atoms of a given element are identical, having the same size, mass, and chemical properties. Atoms of a specific element are different from those of any other element Atoms cannot be created, divided into smaller particles, or destroyed. Different atoms combine in simple whole number ratios to form
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This note was uploaded on 02/23/2010 for the course ENGLISH 1011 taught by Professor Thompson during the Spring '07 term at University of California, Berkeley.

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Reading Log Chapter 4 - Jacob Zipperstein Reading Log...

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