Question

for each item in column a, write the letter of the matching item in column b.
column a

1. a column on the periodic table
2. a row on the periodic table
3. elements in groups 1, 2, and 13 to 18
4. elements that are shiny and conduct electricity
5. elements in groups 3 to 12

column b
a. metals
b. group
c. period
d. representative elements
e. transition elements
in the space at the left, write true if the statement is true; if the statement is false,
change the italicized word or phrase to make it true.

1. there are two main classifications of elements.
2. more than three - fourths of the elements in the periodic table are nonmetals.
3. group 1 elements (except for hydrogen) are known as the alkali metals.
4. group 13 elements are the alkaline earth metals.
5. group 17 elements are highly reactive nonmetals known as halogens.
6. group 18 elements are very unreactive elements known as transition metals.
7. metalloids have properties of both metals and inner transition metals.

Explanation:

• 18: Columns in periodic table are called groups.
• 19: Rows in periodic table are called periods.
• 20: Elements in groups 1, 2, 13 - 18 are representative elements.
• 21: Shiny and electricity - conducting elements are metals.
• 22: Elements in groups 3 - 12 are transition elements.
• 23: There are three main classifications of elements (metals, non - metals, metalloids).
• 24: More than three - fourths of the elements are metals.
• 25: Group 1 elements (except H) are alkali metals.
• 26: Group 2 elements are alkaline earth metals.
• 27: Group 17 elements are halogens.
• 28: Group 18 elements are noble gases.
• 29: Metalloids have properties of both metals and non - metals.

Answer:

1. b
2. c
3. d
4. a
5. e
6. False (three)
7. False (metals)
8. True
9. False (Group 2)
10. True
11. False (noble gases)
12. False (non - metals)