Chemical Reactions Crossword Name: _______

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Across
  1. 2. Reaction a process in which atoms rearrange to form new substances
  2. 5. a subatomic particle with a positive electrical charge
  3. 8. a negatively charged subatomic particle that can be either bound to an atom or free
  4. 10. the relative size of things
  5. 12. the starting substances that are part of a chemical reaction
  6. 13. to change the order or position of something
  7. 15. a unique substance that forms when two or more different elements combine chemically
  8. 16. an ending substance that is made during a chemical reaction
Down
  1. 1. The basic building block of all matter
  2. 3. the simplest chemical forms and thus can not be broken down through chemical reactions
  3. 4. Two or more atoms connected together in a particular way
  4. 6. something that can be observed about a substance, such as color, smell, or boiling point
  5. 7. something that is made of all the same atoms or groups of atoms
  6. 9. a subatomic particle with a neutral electrical charge
  7. 11. Number the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table
  8. 14. Mass approximately equivalent to the number of protons and neutrons in the atom