Across
- 1. this base has a ph of 12 and is used for cleaning in the house.
- 5. chemical bonding that results from the electrical attraction between large numbers of cations and anions
- 7. are the 14 elements with atomic numbers from 58 to 71
- 9. Avogadro's number
- 10. indicates the relative numbers of atoms of each kind in a chemical compound by using atomic symbols and numerical subscripts.
- 11. is a strong acid that has a pH level of 4.0-4.4
- 13. is a small whole number that appears in front of the formula in a chemical equation.
- 17. a solid that is produced as a result of a chemical reaction in solution and that separates from the solution
- 18. the decomposition of a substance by an electric current.
- 21. moles--->moles
- 23. compound a chemical compound whose simplest units are molecules.
- 27. is an arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group.
- 29. prefix for one
- 30. prefix for Three
- 32. a reaction in which a substance combines with oxygen, releasing a large amount of energy in the form of light and heat.
- 33. prefix for two
- 35. are the 14 elements with atomic numbers from 90 to 103.
- 36. is a list of elements organized according to the ease with which the elements undergo certain chemical reactions.
- 37. is the amount of space occupied by an object.
- 38. the physical and chemical properties of the elements are periodic functions of their atomic numbers.
- 39. refers to the closeness of measurements to the correct or accepted value of the quantity measured.
- 40. is a strong acid that has a pH level of 2.2-2.4
- 41. one element replaces a similar element in a compound.
- 42. anything that has mass and takes up space.
- 46. is the amount of a substance that contains as many particles as there are atoms in exactly 12g of carbon-12.
- 49. Synthesis
- 50. a single compound undergoes a reaction that produces two or more simpler substances.
- 51. the elements of Group 1 of the periodic table
- 52. formula used to calculate molar mass
- 55. used to find heat of fusion of water
- 56. is a strong acid that has a pH level of 2.4-3.4
- 57. is a strong acid that has a pH level of 2.0-4.0
- 58. also known as a composition reaction, two or more substances combine to form a new compound.
- 60. the mass of one mole of a pure substance.
- 62. is the number of protons in the nucleus of each atom of that element.
- 63. is a base that has a pH level of 7.6-8.0
- 64. is a characteristic that can be observed or measured without changing the identity of the substance.
Down
- 2. is a logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data.
- 3. is a measure of the amount of matter.
- 4. Equation used to find heat transfer
- 6. prefix for Five
- 8. is a neutral group of atoms that are held together by covalent bonds.
- 12. formula in which to find Density
- 14. what property does baking soda with a ph of 9 fall under?
- 15. results from the sharing of electron pairs between two atoms.
- 16. in a measurement consist of all the digits known with certainty plus one final digit, which is somewhat uncertain or is estimated.
- 19. is a ratio derived from the equation between two different units that can be used to convert from one unit to the other.
- 20. the dissolving medium in a solution
- 22. mass---->moles
- 24. is a substance that is made from the atoms of two or more elements that are chemically bonded.
- 25. a change in a substance that does not involve a change in the identity of the substance.
- 26. is a mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together.
- 28. is a base that has a pH of 8.0-8.5
- 31. the smallest particle of an element that retains the chemical properties of the element.
- 34. atoms of the same element that have different masses.
- 43. the elements of Group 2 of the periodic table.
- 44. is the study of composition, structure, and properties of matter and the changes it undergoes.
- 45. is a base that has a pH level of 7.3-7.5
- 47. prefix for Ten
- 48. formula uses to find pOH.
- 52. is the total number of protons and neutrons in the nucleus of an isotope.
- 53. is a strong acid that has a pH level of 3.0-4.0
- 54. refers to the closeness of a set of measurements of the same quantity made in the same way.
- 59. Formula used to find the pH.
- 61. the substance dissolved in a solution