Across
- 5. Can be observed without changing the substance
- 9. Gained, usually nonmetal
- 11. An element or substance that is not a metal
- 12. A chemical change that produces or makes a new substance
- 13. Parts of mixture look the same
- 14. Cannot be denied or doesn't work
- 15. The columns
- 18. The number placed before the variable
- 19. A change that does not affect the identity of the substance
- 20. Absorbs energy in the form of heat
- 21. Makes a reaction go faster but is not used up
- 23. A reaction in which something reacts with oxygen. The combustion of organic compounds usually takes the form organic compound + oxygen => water + carbon dioxide.
- 25. Elements transfer electrons
- 30. Your purpose for having the experiment
- 31. An element, feature, or factor that is liable to vary or charge
- 33. 1 element and 1 compound form
- 35. Average mass of all atoms
- 36. Ion with more than one atom, has a charge, acts like a single unit
- 38. Symbolic representation of a chemical reaction in the form of symbols and formulae
- 39. 2 or more atoms/ compounds physically combined
- 43. Has a negative charge and is outside the nucleus in orbit
- 44. Parts of a mixture look different
- 46. Have electrons that are like noble gas electrons
- 47. An element whose properties are intermediate between those of metals and solid nonmetals.
- 48. Something that stays the same
- 49. How compact an object is
- 50. Rows
- 51. The elements have a repeating pattern that allow them to be placed in groups and periods
- 54. Identifies the element
- 56. 2 or more atoms chemically combined
- 58. Rounded atomic mass
- 59. To where you can control your experiment
- 60. Characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed
- 61. Same ratio of atoms no matter the size of the substances
Down
- 1. The variable that doesn't depend on another
- 2. Has a neutral or no charge and is inside the nucleus
- 3. Energy Energy stored in the bonds of chemical compounds
- 4. The substance after the change has occurred, written o the right side of the arrow
- 6. Protons, electrons, and neutrons
- 7. The amount of times you experience your experiment
- 8. Positive, lost electrons, usually metals
- 10. The substance before the change, written on the left side of the arrow
- 16. Surrounding an object
- 17. 2 elements form a compound
- 22. I compound forms 2 or more elements
- 24. 2 compounds form 2 new compounds
- 26. A change that creates a new substance
- 27. Has an equal number of atoms on both sides of the arrow.
- 28. A shiny hard piece of matter
- 29. Releases energy in the form of heat
- 32. A set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound.
- 34. Location of protons and neutrons
- 37. Physical restraints used to hold on to something
- 40. The variable that depends on another
- 41. All atoms want 8 valence electrons like the noble gasses
- 42. Describes how a substances changes into a new substance
- 45. Elements share electrons
- 52. Two or more atoms of the same element, they have the same number of protons but different number of neutrons
- 53. The basic unit of a chemical element
- 55. Simplest form of that species
- 57. Has a positive charge and is inside the nucleus