CHEM: Revision: Can you "read" the Periodic Table?
  • 1. What is the mass number (rounded to the nearest whole number) of the element with the symbol "V"?
A) 50
B) 23
C) 60
D) 51
  • 2. How many valence electrons does Chlorine have?
A) 3
B) 1
C) 7
D) 17
  • 3. What is the group number for Rhodium?
A) 5
B) 45
C) 103
D) 9
  • 4. What is the period number for Arsenic?
A) 15
B) 3
C) 4
D) 33
  • 5. Neon, Argon, and Krypton belong to which group?
A) Alkali Metals
B) Transition Metals
C) Noble Gases
D) Halogens
E) Alkaline Earth Metals
  • 6. What is the atomic number of Nitrogen?
A) 2
B) 14
C) 14.007
D) 7
  • 7. How many electrons does Barium have?
A) 137
B) 2
C) 56
D) 6
  • 8. How many energy levels does Cesium have?
A) 1
B) 2
C) 7
D) 6
  • 9. Which of the following is true?
A) Chlorine is a liquid non-metal.
B) Tellurium is a solid metalloid.
C) Phosphorus is a non-metal gas.
D) Mercury is a solid metal.
  • 10. How many protons does Molybdenum have?
A) 42
B) 6
C) 5
D) 96
  • 11. How many neutrons does Lithium have?
A) 4
B) 3
C) 7
D) 2
  • 12. Which of the following correctly matches the subatomic particle with its charge?
A) proton/+, neutron/-, electron/no charge
B) proton/-, electron/+, neutron/no charge
C) proton/+, electron/-, neutron/uncharged
D) proton/+, electron/neutral, neutron/-
  • 13. Which two particles are located in the atom's nucleus?
A) protons and neutrons
B) protons and orbits
C) neutrons and electrons
D) protons and electrons
  • 14. Based on their position on the periodic table, which pair of elements has similar chemical properties?
A) Carbon and Boron
B) Argon and Krypton
C) Phosphorus and Silicon
D) Mercury and Thallium
  • 15. Which of the following is still true today?
A) the atom is a positively charged sphere with electrons embedded in it
B) the atom is mostly empty space
C) electrons orbit totally randomly around the nucleus
D) atoms are tiny solid spheres
  • 16. Elements that are in the same __________ have similar chemical properties?
A) region
B) period
C) nucleus
D) group
  • 17. Based on its position on the periodic table, Sodium has similar properties to which element?
A) Lithium
B) Chlorine
C) Magnesium
D) Beryllium
  • 18. For any atom that is neutral, the number of electrons is equal to the -
A) group number
B) period number
C) number of protons
D) number of neutrons
  • 19. For any atom, the number of neutrons is -
A) the mass number minus the atomic number
B) the same as the number of electrons
C) the same as the number of energy levels
D) greater than the mass number
  • 20. To determine the number of valence electrons of an element, you must first figure out its -
A) Number of Neutrons
B) State of Matter
C) Period Number
D) Group Number
  • 21. An atom has 7 protons. What is the element?
A) Francium
B) Carbon
C) Nitrogen
D) Manganese
  • 22. Is it possible for Carbon to have 7 protons?
A) Yes, some Carbon atoms have 6 protons, some have 7 protons.
B) No, every single Carbon atom has exactly 6 protons. An atom's atomic number gives it its identity.
  • 23. How is an ion created?
A) by adding electrons
B) By adding or losing electrons
C) by adding protons
D) by losing protons
  • 24. How is a cation created?
A) by adding electrons
B) by losing electrons
C) by losing protons
D) by adding protons
  • 25. How is an anion created?
A) by losing electrons
B) by losing protons
C) by adding protons
D) by adding electrons
  • 26. How is an isotope created?
A) by adding or losing neutrons
B) by adding neutrons
C) by adding electrons
D) by adding protons
  • 27. The number of neutrons in an atom is the...?
A) mass number divided by 2
B) difference between the atomic and mass number
C) same as the mass number
D) same as the atomic number
  • 28. The number of electrons in a neutral atom is ?
A) the same as the number of neutrons
B) the same as the atomic number
C) the same as the mass number
D) the difference between the mass and atomic number
  • 29. Which of the following pairs are most similar in chemical behaviour?
A) Mg and F
B) Hg and C
C) B and O
D) Na and Li
  • 30. Which of the following are most similar in electronegativity?
A) F and At
B) Mg and Cl
C) Li and Po
D) Ba and Ra
  • 31. The most reactive element belongs to which family?
A) The alkali metals
B) The alkali earth metals
C) The noble gases
D) The transition metals
E) The halogens
  • 32. The most electronegative element belongs to which family?
A) The noble gases
B) The alkali metals
C) The halogens
D) The transition metals
  • 33. The least reactive elements are all found in which group?
A) 4
B) 18
C) 17
D) 8
E) 1
  • 34. What does the period number tell us?
A) how reactive they are
B) how many electrons there are
C) how many electron levels there are
D) how many protons there are
  • 35. What does the group number tell us?
A) how many valence electrons the atom has
B) how many electrons the atom has
C) the number of protons
D) the number of neutrons
  • 36. Which element is a metal but also a liquid?
A) Silver
B) Sodium
C) Iron
D) Mercury
E) Fluorine
  • 37. Which element from this list is the smallest?
A) H
B) Au
C) F
D) Li
E) Al
  • 38. Which element from this list is the most reactive?
A) I
B) Li
C) Al
D) Mg
E) Cs
  • 39. What makes one element different from another element?
A) the number of electrons
B) the number of protons
C) the number of neutrons
  • 40. Which scientist is given credit for developing the Periodic Table?
A) Lewis
B) Dalton
C) Mendeleev
D) Bohr
E) Newton
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