Environment : Chapter 2 Vocab Words

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Across
  1. 3. Combination of two or more different elements.
  2. 7. Description of what scientists find happening in nature repeatedly in the same way, without known exception.
  3. 9. Change in the chemical composition of a substance.
  4. 10. Combination of two or more atoms of the same or different elements held together by chemical bonds.
Down
  1. 1. The basic building block of matter.
  2. 2. Process that occurs when an output of matter, energy, or information is fed back into the system as an input and leads to changes in that system.
  3. 4. Energy generated and measured by heat.
  4. 5. Factual information collected by scientists.
  5. 6. Energy associated with motion, such as energy in flowing water, a speeding car, or electricity.
  6. 8. One of two or more forms of a chemical element that have the same atomic number but different mass numbers.