CEM 141 MSU Final Exam Questions With Complete Solutions!!

Consider the question: Is there an attractive force between a pencil and the earth? Is this a scientific question? [Yes or No] Because III. It can be tested and answered through observations and experiments IV. The answer is already known and we find it online V. There is no way to design an experiment to answer this question. - Answer-Yes because it can be tested and answered though observations and experiments Which of the following properties ascribed to atoms by the Greeks do we still consider valid? I. Atoms are mostly empty space II. The size and shape of the atoms determine a material's properties III. Atoms are indivisible IV. Atoms are in constant motion - Answer-Atoms are mostly empty space Atoms are in constant motion Electrons are negatively charged. Which experiment provided evidence to support this claim? What is the specific evidence used to support this claim? Experiment: I. The gold foil experiment II. The cathode ray tube experiment Evidence: III. Most of the positively charged alpha particles shot at a thin gold foil passed straight through. IV. A small fraction of the positively charged alpha particles shot at a thin gold foil were deflected. V. The beam of particles emitted from the cathode bent toward the positively charged plate. VI. The beam of particles emitted from the cathode behaved the same no matter what type of metal the cathode was made of. - Answer-The cathode ray tube experiment The beam of particles emitted from the cathode bent toward the positively charged plate.Which of the following contain(s) atoms? a. Heat b. Light c. Energy d. Dust e. All of the above - Answer-All of the above