Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Pre-Lab Questions
Document related concepts
no text concepts found
Transcript
Pre-Lab Questions Name: _______________________________ Date: __________________ Instructor: ______________________________ Section: ________________ 1. Democritus, a Greek philosopher, said that matter is _____________________________. 2. What does the Greek word atomos mean? 3. About 350 B.C., Aristotle stated that both _________________ and _________________ are continuous. 4. What are the five postulates of Dalton’s atomic theory? 5. (a) When electricity was applied to a gas filled seal tube, the tube began to glow and emit a/an ___________________________. (b) This eventually led to the discovery of a negatively charged particle called a/an _______________ and a positively charged particle called a/an _________________. 6. J.J. Thomson’s model of the atom became known as the ____________________ Model. 7. (a) When Ernest Rutherford fired alpha rays at thin gold foils, most of the particles ________________ _______________ _______________ the foil. (b) Rutherford interpreted his results, saying that an atom is largely _______________ ______________. 8. What did James Chadwick discover in 1932?
