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A proton has a positive (+) charge.

A proton has a positive (+) charge. TRUE FALSE. TRUE FALSE. An electron has a neutral charge. TRUE FALSE. TRUE FALSE. A neutron has a negative charge. TRUE FALSE. TRUE FALSE. An electron has a negative (-) charge. TRUE FALSE. TRUE FALSE.

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A proton has a positive (+) charge.

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  1. A proton has a positive (+) charge. TRUE FALSE TRUE FALSE

  2. An electron has a neutral charge. TRUE FALSE TRUE FALSE

  3. A neutron has a negative charge. TRUE FALSE TRUE FALSE

  4. An electron has a negative (-) charge. TRUE FALSE TRUE FALSE

  5. 3 subatomic particles • Protons are positive • Electrons are negative • Neutrons are neutral

  6. The atomic number is equal to the number of protons and neutrons. TRUE FALSE TRUE FALSE Atomic # = protons and electrons in a neutral atom

  7. Ca2+ is an isotope of Calcium with an atomic mass of 2 amu. TRUE FALSE TRUE FALSE Ca2+ is an ion that has lost 2 electrons

  8. How many neutrons does Magnesium-24 have?. 12 24 12 24 Magnesium-24 is an isotope of Magnesium, 24 is the atomic mass, atomic number is 12. atomic mass – atomic # = # of neutrons

  9. According to the octet rule the number of electrons in the outermost shell can not be more than 8 TRUE FALSE TRUE FALSE

  10. An atom has a neutral charge when there are as many neutrons as protons. TRUE FALSE TRUE FALSE An atom has a neutral charge when protons = electrons

  11. Ca and N are chemical formulas. TRUE FALSE TRUE FALSE they are atomic or chemical symbols

  12. O2- has 8 protons and 10 electrons. TRUE FALSE TRUE FALSE This is an ion of Oxygen that has gained 2 electrons

  13. Boron, Silicon, Antimony, Germanium, Arsenic, Tellurium, Polonium & Astitine are all metalloids. TRUE FALSE TRUE FALSE

  14. All elements to the right of metalloids are: metals nonmetals metals nonmetals

  15. The symbol for Fluorine that has lost 2 electrons is:F²+ TRUE FALSE TRUE FALSE

  16. The noble gases do not readily form compounds because they are chemically stable. TRUE FALSE TRUE FALSE

  17. The periodic table is in alphabetic order. TRUE FALSE TRUE FALSE

  18. The chemical symbol for Lithium that has gained 2 electrons is: Li²- TRUE FALSE TRUE FALSE

  19. To find atomic mass you add together the protons and the: electrons neutrons electrons neutrons

  20. Rutherford discovered the nucleus during a gold foil experiment. TRUE FALSE TRUE FALSE

  21. Elements are organized vertically by periods. TRUE FALSE TRUE FALSE

  22. The chemical symbol for Sulfur that has lost 3 electrons is: S³ˉ TRUE FALSE TRUE FALSE

  23. Isotopes occur when the number of neutrons change. TRUE FALSE TRUE FALSE

  24. Bohr discovered the electron. TRUE FALSE TRUE FALSE Bohr is responsible for the electron shell theory. He believed that electrons orbit the nucleus in set shells.

  25. The atomic # of Calcium (Ca) is 20. TRUE FALSE TRUE FALSE

  26. Potassium (K) has 21 neutrons. TRUE FALSE TRUE FALSE Potassium has 20 neutrons: 39 – 19 = 20. atomic mass – atomic number = neutrons

  27. Fluorine (F) is a noble gas. TRUE FALSE TRUE FALSE Fluorine is a halogen (group VIIA or 17)

  28. Tellurium (Te) is in group VII. TRUE FALSE TRUE FALSE Tellurium is in Group VIA or 16

  29. Magnesium (Mg) is in the 3rd period. TRUE FALSE TRUE FALSE

  30. Rutherford believed most of the mass of the atom is in the nucleus. TRUE FALSE TRUE FALSE

  31. Group I elements are alkali metals. TRUE FALSE TRUE FALSE

  32. Group 7A (17) elements are nonmetals. TRUE FALSE TRUE FALSE

  33. Rutherford believed that the atom consisted mostly of empty space. TRUE FALSE TRUE FALSE

  34. Chlorine (Cl) has 17 protons and electrons. TRUE FALSE TRUE FALSE

  35. Nickel (Ni) is a transition metal. TRUE FALSE TRUE FALSE

  36. All elements to the left of the metalloids are metals. TRUE FALSE TRUE FALSE

  37. Hydrogen does not have any neutrons. TRUE FALSE TRUE FALSE

  38. Bohr believed that electrons are in set: orbitals nuclei orbitals nuclei

  39. Neutrons & protons are found in the: nucleus electron clouds nucleus electron clouds

  40. Bohr is responsible for the electron shell theory which states that electrons are found in set shells orbiting the nucleus. TRUE FALSE TRUE FALSE

  41. The noble gas with the lowest atomic mass is: Helium Radon Helium Radon

  42. You can spell out the word “SiCK” using four different elements. TRUE FALSE TRUE FALSE 3 elements: Silicon, Carbon, Potassium

  43. How many electrons does Li have? six three six three

  44. The atomic number is equal to the number of protons. TRUE FALSE TRUE FALSE

  45. atomic mass – atomic number = # of neutrons. TRUE FALSE TRUE FALSE

  46. Alkali metals are more reactive than alkaline earth metals. TRUE FALSE TRUE FALSE

  47. Mendeleev ordered the periodic table by atomic number. TRUE FALSE TRUE FALSE He ordered it by atomic mass

  48. Malleable and ductile are physical properties of metals. TRUE FALSE TRUE FALSE

  49. Fluorine and Chlorine are both in this group: Noble gases Halogens Noble gases Halogens

  50. Lithium and Beryllium are in the same: Group Period Group Period They are both on Period 3

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