Across
- 3. Absorbs energy in the form of heat
- 4. Using symbols to represent chemical compounds
- 6. A subatomic particle that has a negative charge
- 7. A change that does not effect the identity of the substances
- 8. Atoms or ions are bound together
- 10. 1 compound forms 2 or more elements
- 12. Characteristic or description of an object
- 13. A subatomic particle that has a positive charge
- 14. A substance that cannot be broken down any more than it is.
- 17. A particle that is smaller than an atom
- 20. Can be observed without changing the substance
- 22. Parts of mixture look the same
- 23. location of protons and neutrons
- 24. A variable that can be on its own
- 25. A subatomic particle that has a neutral charge
- 29. elements share electrons, between 2 non-metals
- 30. The patterns of an electrons in an atom
- 31. The number in front of the variable
- 33. A change that creates a new substance
- 34. 1 element and 1 compound form a new element and a new compound
- 38. Ion with more than 1 atom has a charge, acts like a single unit
- 39. Releases energy in the form of heat
- 40. All atoms want 8 valance electrons like the noble gases
- 42. Parts of mixture look different
- 43. Hydrogencarbon and oxygen form water and carbon dioxide
- 45. negative ion, gained electrons, usually non-metals
- 46. Makes a reaction go faster but id not used up
- 48. A variable that needs something else with it
- 52. A scientific test or piece that actually measures what it sets out to do
- 54. An element, feature, or factor that can change
- 56. An educated guess based on earlier observations
- 57. Atom has gained/lost e ,not neutral
- 58. Right side of the P.T.
- 59. A variable that stays the same the entire time
- 60. 2 or more atoms chemically combined
Down
- 1. A chemical change that produces a new substance
- 2. 2 compounds form 2 new compounds
- 5. How compact an object is
- 9. allow them to be placed in groups and periods
- 11. Describes how a substance changes into a new substance
- 13. The substance after the change has occurred, written on right side of arrow
- 15. Whole number on the P.T.
- 16. Rounded atomic mass
- 18. Elements with the same number of electrons are put in the same row
- 19. 2 elements form a compound
- 21. Same ratio of atoms no matter the size of substance
- 26. The substance before the change, written on left side of thee arrow
- 27. Has an equal number of atoms on both sides of the arrow
- 28. Something that is unchanged through out an experiment
- 32. The energy stored in the bonds of a compound
- 35. 2 or more atoms/compounds physically combined
- 36. Decimal number on P.T.
- 37. two or more atoms of the same element, they have the same #of protons but different umber of neutrons
- 41. on the left side of the P.T.
- 44. Elements transfer electrons, between a metal and a non-metal, or cation and anion
- 47. the elements have a repeating pattern
- 49. Simplest form of that species, smallest form of an element that consists of a nucleus, protons, neutrons, electrons, orbitals
- 50. Elements with similar properties are arranged in the same column
- 51. Positive ion, lost electrons, usually metals
- 53. An effect or attempt
- 55. On the stair-step