Across
- 3. the smallest form of a chemical particle that retains the properties of the particle.
- 5. A + BC -> B + AC (dash between words)
- 8. outer shell of an atom
- 9. A + B -> AB, what type of reaction
- 11. founder of modern atomic theory (surname)
- 12. a molecule that contains two or more different types of atoms
- 17. how many groups are on the periodic table
- 18. AB -> A + B, what type of reaction
- 19. receives hydrogen ions, opposite of an acid
- 21. particle with no charge/neutral charge
Down
- 1. The number of protons contained in an atom(dash between words)
- 2. positively charged particle
- 4. occurs when the nucleus loses (or gains) a neutron
- 6. negatively charged particle
- 7. The number of protons plus neutrons contained in an atom (dash between words)
- 10. displacement AB + CD -> AC + BD
- 13. how many periods are found in the periodic table
- 14. a liquid that releases positively charged hydrogen ions
- 15. an exothermic chemical reaction that requires oxygen and a fuel substance as reactants and an ignition source to trigger the reaction
- 16. a group of atoms that are bonded together
- 20. the Greek word that was originally used for atoms