Chemistry
Name:
Date
Chem Wkbk
History of the Periodic Table
DIRECTIONS: Answer correctly the following questions.
1. Who is considered to be the ‘father’ of the periodic table? ____________________________
2. How did he arrange the elements? _______________________________________________
3. What three elements were predicted from empty spaces in the periodic table? _____________
4. What was Henry Moseley’s contribution to the periodic table? _________________________
5. In the modern periodic table, elements are ordered:
A. according to decreasing atomic mass
B. according to Mendeleev’s original
C. according to increasing number of
design
D. based on when they were discovered
protons
6. Mendeleev noticed that properties of elements appeared at regular intervals when the
elements were arranged in order of increasing:
A. density
C. atomic number
B. reactivity
D. atomic mass
7. The modern periodic law states that:
A. no two electrons with the same spin can be found in the same place in an atom
B. the physical and chemical properties of the elements are functions of their atomic number
C. electrons exhibit properties of both particles and waves
D. the chemical properties of elements can be grouped according to periodicity, but physical
properties cannot
8. The discovery of the noble gases changed Mendeleev’s periodic table by adding a new:
A. period
B. group
C. series
D. sublevel
block
9. The most distinctive property of the noble gases is that they are:
A. metallic
B. radioactive
C. metalloids
D. largely
unreactive
10. Lithium, the second element in Group 1 has an atomic number of 3. The third element in this
group has an atomic number of:
A. 4
B. 10
C. 11
D. 18
11. What does periodic mean? _____________________________________________________
Periodic Table
12. _________________ are elements with properties of both metals and non-metals.
13. What are the names of each of the following? In which are the elements most similiar?
Vertical column _______________________________
Horizontal row: _______________________________
14. On the below periodic table, name each indicated group and give two properties:
(name only for these three)
p. 2
Periodic Table
p. 3
15.
16. What is the purpose of the zig-zag or staircase line on the right side of the periodic table?
______________________________________________________________________________
17. Explain the difference between atomic mass and atomic number: _______________________
___________________________________________________________________________
18. _____________ and _____________ are important metalloids because they are used in
computer chips.
19. In the periodic table, the atomic masses of Tellurium and Iodine decrease rather than
increase, while their atomic numbers increase. This phenomenon happens to other
neighboring elements in the periodic table. Name two of these sets of elements.
A.
and
B.
and
20. What are five characteristic properties of metals?
A.
_______________________________________________________________________
B.
_______________________________________________________________________
C.
_______________________________________________________________________
D.
_______________________________________________________________________
E.
_______________________________________________________________________
Periodic Table
p. 4