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Atomic theory

AP Biology Basic Chemistry

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Biology
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Resch/Stuart AP Biology Basic Chemistry Basic Chemistry Review Directions: Since this will be handed in digitally, please type all response in bold directly below the question. ?Once you are done, please submit this document via google drive. ?Remember that this is due by Aug. 18th. Review: J.J. Thomson?s Plum Pudding model and ionic vs. molecular bonding

Living in the Environment 16th Ed. : Ch.2 Key Terms

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Environmental Science
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Chapter 2 Key Terms acidity Ions are also important for measuring a substance?s acidity in a water solution, a chemical characteristic that helps determine how a substance dissolved in water will interact with and affect its environment. atom The most basic building block of matter is an atom: the smallest unit of matter into which an element can be divided and still retain its chemical properties. atomic number Each element has a unique atomic number, equal to the number of protons in the nucleus of its atom. atomic theory The idea that all elements are made up of atoms is called the atomic theory and is the most widely accepted scientific theory in chemistry. cells

Science history

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Chemistry
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History of Science ? ? Illusion ? Delusion - Truth I thought this was Science Course Science is the Truth ?. but but ?.. Science seems to change all the time Hmmmm First Quiz From Fire to Atomism Early Greek Atomic Theory Some thought EVERYTHING was made from water in one of the forms (ice, liquid, gas) Democritus ? atoms differed in only shape and size The concept of the ?nocut? atomos was developed ? SMALLEST BUILDING BLOCK Arostotle ? all matter is composed of four elements ? Earth, air, fire, water The philosopher's stone and the rise of alchemy ?convert cheaper metals into gold finding the?elixir of life ?in the air an "ether" which breathed life into living things Problems with Alchemy

Bob Jones PPT Notes -- Chapter 4a

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Chemistry
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The Development of Atomic Models: A Historical Perspective 1 Model of an Atom An IDEA of what it looks like (a working representation) 2 Atomic Models Democritus? Idea An object CANNOT be divided indefinitely. There is a smallest particle. atom: (Gk. atomos?indivisible) 3 Democritus ? Chemistry textbook p. 73 (BJU Press) Atomic Models There is a basic unit of matter?the atom. Chemists found this out by looking at the mass ratio of substances. But the atom is NOT indivisible. Democritus? Idea was CORRECT! 4 Democritus ? Chemistry textbook p. 73 (BJU Press) Continuous: Matter can be subdivided forever. Particulate: A smallest particle exists. 2 Theories Atomic Models 9 grams of H2O: 8 grams of oxygen 1 gram of hydrogen Ratio is 8:1 Mass Ratio 90 grams of H2O:

Chapter 2

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Chemistry
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Chapter 2.1- 2.3 (pages 41-48) Law of conservation of mass- Mass is neither created nor destroyed Law of definite proportion- a given compound always contains exactly the same proportion of elements by mass. Law of multiple proportions- When two elements form a series of compounds, the ratios of the masses of the second element that combine with 1 gram of the first element can always be reduced to small whole numbers Dalton?s Atomic Theory- -Each element is made up of atoms -The atoms of a given element are identical -Chemical compounds are formed when atoms of diff elements combine with each other -Chemical reactions involve reorganization of the atoms Dalton prepared first table of atomic masses

Chem Scientists and Definitions

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Chemistry
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Knights Bachelor
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J. J. Thomson
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Democritus Greek; said that everything in the universe starts with small pieces of un-cuttable (atomos) pieces of matter but had no proof ? Aristotle Greek; said there was no such thing as the smallest piece of matter; he was the good speaker therefore people of his time believed him John Dalton created the Atomic Theory in the 1800's The Atomic Theory says that all things in the world are made of atoms, and if the materials are the same, the atoms are identical especially in their mass; different elements have different atoms and a chemical reaction is a rearrangement of atoms William Crookes

Something?

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Algebra
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Question 1?(Worth 1 points) [02.01]Which of the following is essential for a theory to become widely accepted within the scientific community? ?A theory must include a valid scientific model. ?A theory must be supported by many different experiments. ?A theory is an educated guess based on multiple observations. ?A theory must change over time regardless of the scientific data. Points earned on this question: 1 Question 2?(Worth 1 points) [02.01]Which of the following is the?best?definition of a scientific model? ?any visual representation of scientific experimental findings ?a 3-d object used to demonstrate key scientific theories and data ?a visual, verbal, or mathematical explanation of experimental data ?an explanation of any scientific idea, theory, or experimental results

Chemistry

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Art History
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Social issues in forbidden city Corrupted government Ignorant Deals issues in violent ways Their views on democracy which the students want Indifference Their views are based on Maoism (the PLA retaliated by using violence) Cultural Aspects Appearance Patriotic government very rightist (conservative) Traditional and hardworking society Food Housing Manners idk (the part where alex learns that it is expected to put a lot of food on the table but not eat it because it means that you?ve ate too much and you can?t eat anymore) Plot Talk about the student demonstration May 4th include hunger strike and martial law Death of Hu Yao Bang Li Peng PLA and talk about one part of like war ( teargas cannisters , AK47, Xin Hua Shot, Lao Xu Dead

AP Chemistry Vocabulary Chapter 1-4,9

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analytical chemistry the area of chemistry that focuses on the composition of matter applied chemistry research that is directed toward a practical goal or application biochemistry the area of chemistry that focuses on processes that take place in organisms biotechnology the field that applies science to the production of biological products or processes chemistry the study of the composition of matter and the changes that matter undergoes experiment a repeatable procedure that is used to test a hypothesis hypothesis a proposed explanation for an observation inorganic chemistry the study of substances that, in general, do not contain carbon macroscopic describes the world of objects that are large enough to see with the unaided eye matter

Prentice Hall AP Chem. Chapter 2 notes

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Chapter 2 Atoms, Molecules, and Ions John D. Bookstaver St. Charles Community College St. Peters, MO ? 2006, Prentice Hall, Inc. Chemistry, The Central Science, 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Atomic Theory of Matter The theory that atoms are the fundamental building blocks of matter reemerged in the early 19th century, championed by John Dalton. Dalton?s Postulates Each element is composed of extremely small particles called atoms. Dalton?s Postulates All atoms of a given element are identical to one another in mass and other properties, but the atoms of one element are different from the atoms of all other elements. Dalton?s Postulates
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