Across
- 2. the only parts of a chemical equation you are allowed to change while balancing
- 5. in a chemical equation, this number goes in front of a chemical formula to indicate how many molecules are required to balance the equation
- 7. in a chemical formula, this number indicates how many of that atom or group are required to make that molecule
- 9. an attractive force between all molecules, the dominant attractive force between nonpolar molecules
- 13. molecules with four regions of electron density around a central atom's valence shell have this geometry
- 14. a chemical reaction where an ionic substance has one of its ions replace with a new one
- 17. in a molecule, orbitals combine and form new degenerate orbitals
- 19. polar liquids will climb the walls of a thin glass tube
- 21. required for combustion
- 22. the electric charge on an electron
- 23. a chemical reaction that uses 1 compound to make two or more simpler substances
- 25. the electric charge on a proton
- 28. molecules with five regions of electron density around a central atom's valence shell, but only four of them are bonds have this geometry
- 29. one of many chemicals that is composed of *mostly* carbons and hydrogens, generally required for combustion
- 30. a collection of atoms that are covalently bonded to one another
- 31. these elements react with water in a single-replacement reaction
- 32. six orbitals that form octahedral geometry
- 33. molecules with four regions of electron density around a central atom's valence shell, but only two of them are bonds have this geometry
- 35. the most electronegative atom
- 36. three orbitals that form trigonal planar geometry
- 37. a molecule that has a slightly positive side and a slightly negative side
- 38. a mixture of metal and metal oxide that can undergo a VERY HOT single replacement reaction
- 39. this process will decompose water into hydrogen and oxygen gases
- 40. IMFs determine how many drops of a liquid can be placed on a penny
Down
- 1. sulfur hexachloride's geometry
- 3. this type of chemical reaction generally uses oxygen and releases carbon dioxide
- 4. orbitals that have the same energy
- 6. weak IMFs will cause faster drying
- 8. a chemical reaction that uses pure elements to make compounds
- 10. polar molecules will rotate and be attracted to these
- 11. these electrons are the ones involved in forming chemical bonds
- 12. an attractive force between a polar molecule and a nonpolar molecule
- 15. when a molecule has one or more bonds between hydrogen and oxygen, fluorine, or nitrogen it experiences this attractive force
- 16. this type of reaction usually requires energy
- 18. all the atoms you start a chemical reaction with should still be there at the end
- 20. a molecule that does not have a distinct positive or negative side
- 24. an attractive force between polar molecules
- 26. this property determines if two atoms will form an ionic, polar or nonpolar covalent bond
- 27. a chemical reaction where two ionic substances swap anions (or cations)
- 32. four orbitals that form tetrahedral geometry
- 34. hydrogen peroxide slowly decomposes, we add this to make chemical reactions go faster