Across
- 1. changing from a liquid to a gas
- 6. ion with a negative charge
- 7. a reaction where something burns
- 10. model of atom invented by Niels Bohr
- 11. the force that pushes electrons in an electric circuit
- 13. a diagram of an atom that includes only valence electrons
- 15. a reaction where atoms are bonded
- 18. all matter is made of ____
- 19. changing from a solid to a liquid
- 21. changing from a gas to a solid
- 22. a reaction where the atoms swap partners
- 27. a reaction where energy and heat is released
- 28. has a neutral charge
- 29. changing from a solid to a gas
- 32. has more hydrogen ions
- 33. this is measured in ohm's
- 37. changing from a gas to a liquid
- 39. ion with a positive charge
- 40. is another name for base
- 41. type of decay where energy comes out in the form of gamma rays
- 42. the electrons on the outermost shell of an atom
Down
- 2. has a positive charge
- 3. has a negative charge
- 4. amount of power in a battery
- 5. two or more atoms bonded together
- 8. type of decay where positron and neutron are released
- 9. can be found at the center of an atom
- 12. what does PH stand for
- 14. a reaction where one element replaces another
- 16. how many valence electrons does an atom need to be happy
- 17. how fast or slow atoms change
- 20. atoms where the number of protons is not the same as the number of electrons
- 23. has more hydroxide ions
- 24. changing from a liquid to a solid
- 25. materials that are mixed together but not connected
- 26. a bond where electrons are taken/given that happens between metals and non-metals
- 30. type of decay where an alpha particle is released
- 31. scale that runs from 0-14 and measures acids and bases
- 34. this number is neutral on the pH scale
- 35. a reaction where energy is absorbed
- 36. a bond where electrons are shared between non-metals
- 38. a reaction where bonds are broken