Procedure: You will write a research paper that will show your knowledge of each scientist and his theory of the atom. You must: Have at least three paragraphs detailing the following: Who was he; when did he live/do his research What was his most notable experiment and why. What is his atomic theory. Atomic Theorist to include: John Dalton J.J. Thompson Ernest Rutherford Niels Bohr Scoring Guide: Criteria Perfect 4 Needs work 3,2,1 Number of paragraphs 12 or more paragraphs < 12 paragraphs Includes all 4 atomic theorists all 4 theorists < 4 theorists or incomplete information addressed all 3 questions about each theorist 3 topics addressed and answered for each theorist < 4 topics addressed or incomplete answers for one or more theorist Proper grammar, spelling and punctuation. The paper includes perfect grammar, punctuation and spelling. More than 5 mistakes in grammar, punctuation and spelling. Plagiarism: the practice of taking someone else's work or ideas and passing them off as one's own. Do not copy and paste. Ernest Rutherford …show more content…
Dalton represents the atomic structure of compounds with his own symbols and suggested his atomic theory. 1. All matter is made up of tiny particles known as atoms. 2. Atoms are unbreakable and unchangeable – atoms of an element can’t be created, destroyed or broken into smaller parts or changed into another element 3. Elements are described by the mass of their atoms – atoms of different elements have different masses. Dalton used the word weight rather than mass. 4. When elements react, their atoms come together in simple, whole-number ratios. This assumption helps in the explanation of the ‘law of definite proportions’. 5. When elements react, their atoms sometimes come together in more than one, whole number ratio – this assumption explained the weight ratios of nitrogen to oxygen in nitrogen