Breakfast with particles

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Across
  1. 4. / any of numerous subatomic constituents of the physical world that interact with each other
  2. 6. / Set of parts or elements that adjusted to each other and using mechanical energy do a job or fulfill a function.
  3. 7. / most famous scientist of the 20th century, author of the theory of relativity, received the Nobel Prize in Physics in 1921
  4. 9. / The ability of matter to produce work in the form of movement, light, heat, etc.
Down
  1. 1. / is where the scale where quantum mechanical effects become important when studied as an isolated system. ​​​
  2. 2. / perform a scientific procedure, especially in a laboratory, to determine something.
  3. 3. /Set of knowledge obtained through observation and reasoning, systematically structured
  4. 4. / Science that studies the properties of matter and energy and establishes the laws that explain natural phenomena
  5. 5. / consists in the propagation of a disturbance of some property of space
  6. 8. / Organized set of ideas that explain a phenomenon, deduced from observation, experience or logical reasoning.