Section 8.2- Classification Of The Elements

Question 1

Elements in the same group are said to belong to the same

Answer 1

Group

Question 2

Rows of elements are

Answer 2

Periods

Question 3

Periods are numbered from

Answer 3

Top to bottom

Question 4

Are located at the far right of the periodic table

Answer 4

Nonmetals

Question 5

Are at the left and center of the periodic table

Answer 5

Metals

Question 6

have properties intermediate between those of metals and nonmetals and is located between

Answer 6

Semi metals or metalloids

Question 7

Are sometimes called semiconductors

Answer 7

Semimetals

Question 8

Most common chemical reactions involve the elements in groups 1,2 and 13-18; these elements are called

Answer 8

Main group elements or representative elements

Question 9

Elements in the middle section of the periodic table- groups 3-12- are

Answer 9

Transition metals

Question 10

Many __________________ compounds are colored

Answer 10

Transition metal

Question 11

The two rows of elements set off by themselves below the main table are very similar in properties and are called the

Answer 11

Inner transition metals

Question 12

The first row of the inner transition metals is known as the

Answer 12

Lanthanide series or rare-earth series

Question 13

The second row of the inner transition metals which follows actinium is called the

Answer 13

actinide series

Question 14

Group 1 metals in a main-group classification is

Means plant ash

Answer 14

Alkali metals

Question 15

Alkali metals are found naturally only as _____________, never as free elements

Answer 15

1+ ions

Question 16

Group 2 metals are called __________________
Since they have some properties similar to those of the alkali metals but were originally found in the earth rather than ashes

Answer 16

Alkaline earth metals

Question 17

Groups ____ , ______ , and _____ do not have special names

Answer 17

13 (3A), 14 (4A), 15(5A)

Question 18

Group 16 (6A) elements do not have widely used name but are sometimes called

Answer 18

Chalcogens

Question 19

Group 17 are ________________
Means salt-former

Their most common form in naturally occurring compounds is the 1- ion

Answer 19

Halogens

Question 20

Group 18 contains the

Since they already have a filled valence shell, they do not readily combine with other elements

Answer 20

Noble gases