Atoms, Elements and the Periodic Table Answers
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
Water 1. Which substance listed below is NOT an element?
atom 2. A(n) ____________ is a basic unit on matter.
Neutrons 3. ____ are particles without electric charge in the atom’s nucleus.
Bohr 4. Which scientist calculated what energy levels were around each element? We also use his model to draw
the elements.
ion 5. A positively charge _ has more prrotons than electrons.
matter 6. Anything that takes up space and has mass is _______.
# of 7. Isotopes of Carbon have different _________.
Neutrons
protons 8. ______ are particles that are located in the atom’s nucleus.
& neutrons
Periods 9. The horizontal rows in the Periodic Table are called the ___.
Groups & 10. The vertical columns of the Periodic Table are called the ___.
Families
Protons 11. The atomic number refers to the number of ________.
Protons &
12. The atomic mass is a combination of what two sub-atomic particles?
Neutrons
valence 13. The number of electrons on the outer energy level or shell is called ______.
Electrons
7 14. Halogens all have ____ valence electrons.
Electrons 15. H
2
O is a compound formed by sharing _____.
atomic #
16. The modern periodic table is arranged in order of increasing.
Group 17. Elements with similar characteristics are the same ____.
Energy
18. The horizontal rows on the periodic table tells us how many _____ the element has.
levels
atoms 19. Elements are all alike in that they all contain __.
Like characteristics
20. A family or group of elements have ____.
& = valence electrons
Electrons
21. An ion haas lost or gained ____.
Neutrons
22. An isotope has lost or gained ____.
Alkali Metals
23. Silvery solids with low densities and low melting points found in Group 1.
Alkaline Earth Metals 24. Another name for Group 2.
Transition Metals 25. Elements in group 3-12.
Noble Gases 26. Groups that has it’s valence electrons filled.
Halogens 27. Groups that readily combine with Alkali Metals to form salts.
metal 28. A transition element
non- metal 29. Noble Gases
non- metal 30. Calcium
metalloids 31. Elements that show properties of both metals and non-metals.
metalloids 32. Boron & Silicon
2 electrons 33. 1
st
energy level
8 electrons 34. 2
nd
energy level
18 electrons 35. The 3
rd
energy level
32 electrons 36. 4
th
energy level
Bohr 37. Electrons travel definite paths
Rutherford 38. Gold Foil experiment
Thomson 39. Cathode Ray Tube
Democritus 40. Proposed Atoms
Dalton 41. Discovered the nucleus of the atom
Thomson 42. Plum pudding model
Dalton 43.Created the Atomic Theory
____ 44. Neutrons
____ 45. Protons
____ 46. Electrons
47. Fill in the missing information. Round all answers
Protons = 79
Electrons = 79
Neutrons = 118
Atomic Mass = 197
Atomic Number = 79
48. Fill in the missing information. Round all answers
Protons =
1
Electrons = 1
Neutrons = 0
Atomic Mass = 1
Atomic Number = 1
49. Draw a Bohr model and a Lewis Dot diagram for the element on the board.
1
st
period Nitrogen 5
th
period Aluminum
N Al
79
Au
Gold
196.967
1
H
Hydrogen
1.008
P=7
N=
7
P=13
N=
14
