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1. The study of matter and the changes it undergoes describes the science of ______?1. Chemistry________________________________________________________________________

2. The _____ is the fundament unit of matter?2. Atom________________________________________________________________________

3. The atom is composed up of three subatomic particles know as ___, ___, and ___?3. Protons, Electrons and Neutrons ________________________________________________________________________

4. Protons are ___ charged particles found in the nucleus of an atom?4. Positively ________________________________________________________________________

5. Electrons are ___ charged particles that orbit the nucleus of an atom?5. Negatively________________________________________________________________________

6. Neutrons are ____ particles found in the nucleus of an atom?6. Neutral ________________________________________________________________________

7. An ion is an atom or molecule that ____?7. Is an atom or molecule where the total number of electrons is not equal to the total number of protons.________________________________________________________________________

8. Write the symbol for a cation of hydrogen.8. H+

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9. The atomic number of an atom or element describes the number of ___?9. Protons________________________________________________________________________

10. Weight is best described as ______?10. Pull of gravity on a matter and amount of matter.________________________________________________________________________

11. Atoms of any one type of element, such as gold all possess the same number of ____? 11. Protons

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12. Two or more elements that combine as a result of a chemical reaction form a ____?12. Compound________________________________________________________________________

13. An example of a mixture would be ______?13. Salt water________________________________________________________________________

14. The least dense and most energetic of the three states of matter is _____?14. Gas________________________________________________________________________

15. Density is a physical property that refers to _____?15. Mass relative to volume.________________________________________________________________________

16. A kilogram is equal to _____ grams.16. 1000________________________________________________________________________

17. There are _____ centimeters in a meter.17. 100________________________________________________________________________

18. Measurements are ___ because of equipment error and human judgment? 18. Inconsistent/Incorrect/Inaccurate________________________________________________________________________

19. The number 226 written in scientific notation is ____?19. 2.26 * 102

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20. The figure 0.005 written in scientific notation is _____?20. 5 * 10-3

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21. Elements are arranged on the periodic table in the order of increasing ___?21. Atomic Number + Electron Configuration________________________________________________________________________

22. The ___ is the standard unit for measurement of length?22. Meter________________________________________________________________________

23. Anything that has mass and takes up space is ____?23. Matter________________________________________________________________________

24. What is the measurement of matter whose value is depends on the force of gravity?24. Weight________________________________________________________________________

25. Chemists who specialty is determining the composition of chemicals work in the field of __?25. Analytical Chemistry________________________________________________________________________

26. Chemists who study the chemistry of living organisms work in the field of?26. Biochemistry________________________________________________________________________

27. The general term for a systematic approach in scientific study is?27. Scientific Method________________________________________________________________________

28. The type of data that is descriptive in nature is?28. Qualitative Method________________________________________________________________________

29. What is the name given to set of controlled observations that test a proposed explanation?29. An Experiment________________________________________________________________________

30. The variable that you plan to change during the course of an experiment is?30. Independent________________________________________________________________________

31. A judgment based upon the results of an experiment is?31. Control________________________________________________________________________

32. When an explanation has been supported by many experiments, the explanation is a?32. Theory________________________________________________________________________

33. What is the name given to research that is undertaken to solve a specific problem?33. Applied Research________________________________________________________________________

34. In the Lab, why do we tie our long hair?34. So you hair doesn’t catch on fire, and get your way.________________________________________________________________________

35. In the SI systems of measurements that are seven ___ units?35. Base________________________________________________________________________

36. What is the prefix, abbreviation, and power of 10 for the following: Mega, Deci, Centi, and Micro?36. Mega 106, Deci 10-1, Centi 10-2, and Micro 10-6

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37. Arrange the following list in increasing order by volume: milliliter, centiliter, Microliter, and kiloliter, and liter.37. Microliter, Milliliter, Centiliter, Liter, Kiloliter________________________________________________________________________

38. What scale provides the base unit for temperature in the SI system?38. Kelvin________________________________________________________________________

39. Which of the following have 4 significant figures: .004, 0.06309, 4200, 6730.39. .044________________________________________________________________________

40. Express the sum of 4.824 + 2.03 + 4.72319 + 111.1 to the proper Sig. Fig.40. 246.1338________________________________________________________________________

41. Perform the indicated mathematical operations and report the answer to the proper Sig. Fig. (21.55 x 4.12)/42.4241. 2.09________________________________________________________________________

42. How many milliliters are there in 1.0 Microliter?42. .001 Milliliters ________________________________________________________________________

43. What volume is occupied by 16.4 g of mercury? The density of mercury is 13.6 g/mL.43. 1.21 mL________________________________________________________________________

44. The closeness of an experimental value to an accepted value is ____?44. Percent Error

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45. A measure of the closeness of a series of measurements to the theoretical value is __?45. Accuracy________________________________________________________________________

46. What is the percent error if a measure value is 24.59 g/ml and the accepted value is 24.49 g/mL?46. 96.5%________________________________________________________________________

47. A characteristic that can be observed or measured without changing the sample’s composition is a ____ property?47. Physical________________________________________________________________________

48. Properties that are dependent on the amount of substance present are ____ properties?48. Extensive________________________________________________________________________

49. When one substance changes identity, its exhibits a(n) ___ property?49. Chemical________________________________________________________________________

50. Which of the following is not a chemical property? Freezing of water, rusting of iron, placing iron in HCL and producing hydrogen gas, burning a piece of wood.50. Freezing of Water________________________________________________________________________

51. What type property is observed when milk sours?51. Chemical________________________________________________________________________

52. Which of the following is not a state of matter: solid, liquid, gas, density?52. Density________________________________________________________________________

53. A form of matter that has a fixed shape and occupies a fixed volume is?53. Solid________________________________________________________________________

54. A vapor is a ___?54. Gas

55. In the following chemical reaction, are hydrogen and oxygen reactants or products?55. Reactants

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56. The statement, “Mass can neither be created nor destroyed” is the ___?56. Law of Conservation of Mass________________________________________________________________________

57. How would you read the following chemical reaction 2Cu + 02 2CuO?57. 2 Moles of Copper reacts with 1 mole of Oxygen to make 2 Moles of Copper (II) oxide________________________________________________________________________

58. How can you tell when the following reaction is balanced? 2Cu + 02 2CuO58. When it has the same number of Copper’s on both sides, and when it has the same number of Oxygen atom’s on both sides.________________________________________________________________________

59. Which of the following is a heterogeneous mixture: sugar, sugar in water, samples of nitrogen and oxygen in the same container, samples of argon and iron in same container?59. Argon and Iron in the same container.________________________________________________________________________

60. What is the smallest particle of a compound that maintains the properties of that compound?60. ________________________________________________________________________

61. What is the negatively-charged particle in an atom?61. Electron________________________________________________________________________

62. Which subatomic particle has a mass that is almost has the mass of a proton?62. Neutron ________________________________________________________________________

63. What is the name for atoms of an element that have different masses?63. Isotope________________________________________________________________________

64. The atomic number of an element is defined by its number of ___?64. Protons________________________________________________________________________

65. How many protons are present in an atom of potassium-39?65. 19 Protons________________________________________________________________________

66. The sum of the protons and neutrons in a nucleus is ___?66. Mass Number________________________________________________________________________

67. A proton is about ____ times more massive that an ____?67. 1835, Electron________________________________________________________________________

68. Which scientist determined that almost all of an atom’s mass is located in its nucleus?68. Rutherford________________________________________________________________________

69. An atom of an element contains eight electrons. What is the identity of this element?69. Oxygen________________________________________________________________________

70. An atom that has the same number or protons has a ___ charge?70. Neutral________________________________________________________________________

71. Atomic number= number of __= number of ___?71. Protons, Electrons ________________________________________________________________________

72. All hydrogen isotopes have the same number of ____ and _____ but different number of ____?72. Protons, Electrons, Neutrons________________________________________________________________________

73. The Heisenberg uncertainty principle states that ____?73. It is impossible to define both the exact momentum and the position of a particle at the same moment in time.________________________________________________________________________

74. The lowest energy state of an atom is called the _____ state?74. Ground________________________________________________________________________

75. The ground state of hydrogen corresponds to the ____ energy level?75. First________________________________________________________________________

76. The concept that all moving particles have wave characteristics is attributed to __?76. Plank________________________________________________________________________

77. How many electrons can an orbital contain?77. 2________________________________________________________________________

78. In the periodic table, the principle quantum number corresponds to the _____?78. Period________________________________________________________________________

79. All the ___ orbitals are spherically shaped.79. S________________________________________________________________________

80. What is the symbol of the element that has the following electron configuration? 80. Cl________________________________________________________________________