Periodic Table Worksheet Page 2
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39. What is the name of the chart that organizes the elements according to their physical and chemical properties?
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10. What does the atomic mass of an element measure? __________________________________________________
11. What is the relationship between the number of protons in an atom and its atomic number?
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12. What is a chemical family? ________________________________________________________________________
13. Name the chemical families in groups
o 1
o
_________________________
17
_________________________
o 2
o 18
_________________________
_________________________
14. Compare the alkaline earth metals to the alkali metals according to their reactivity with water.
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17. Define each of these terms:
(a) valence shell
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(b) valence electron
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18. List the number of valence electrons in atoms of each of the following elements:
(a) potassium _____
(c) oxygen
_____
(b) aluminum
_____
(d) argon
_____
19. (a) Which chemical family is composed of elements with filled valence shells?
_________________________
(b) How does having filled valence shells affect the reactivity of these elements?
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20. How is a physical property different from a chemical property?
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22. What is the atomic number of each of these elements?
(a) antimony
_____
(c) manganese
_____
(b) arsenic
_____
(d) selenium
_____
23. Use the periodic table to find the atomic mass of
o Hydrogen
o nitrogen
_____
_____
o oxygen
o rhenium
_____
_____
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