Interactive - Unit 2. Lesson 4. Models of the atom

Discover the evolution of atomic models from ancient Greece to modern quantum mechanics. See how scientists changed our understanding of atoms!

Watch the video in the link above. Then choose the right answer.1. The very first person to think about atoms was Democritus Dalton Leucippus Aristotle 2. Scientists have change the conception of the atom because The previous conception did not work They had more curiosity They discovered more evidence The made many experiments 3. When John Dalton proposed his ideas of the atom he did not develop experiments his ideas were immediately accepted scientist did not believe at the beginning he did not know how to prove 4. The big change from Dalton's model to Thomson's model was that atoms were indivisible atoms had electric charge atoms were not indivisible atoms were not tiny particles 5. With his Gold-Foil experiment Rutherford mainly stated that atoms had a nucleus atoms had positive charged particles atoms had a negative electric charge atoms were more complex than they had thought 6. Which of these analogies matches the most with Bohr's ideas of the atom? Hyperactive flies around rotten meat A chocolate chip cookie The planets orbiting the sun None of the previous 6. Which scientist called the paths of electrons orbitals? Bohr Chadwick Schrödinger Rutherford II. Match the name of the scientist to the analogy of his model of the atom Dalton Hard billiard ball Thomson Chocolate chip cookie Rutherford Planets around the sun Bohr Rings in the trunk of a tree Schrödinger Hyperactive flies around rotten meat III. Click on the tags and write the name of the scientist and a short description of the model for each picture (not necessary to include analogies)