Periodic Table (9)

Question 1

Some elements are highly _____ because their outermost energy levels are only partially filled.

Accepted Answer

reactive

Question 2

periodic law states, elements with similar __________ appear at regular intervals.

Accepted Answer

properties

Question 3

Mendeleev based his arrangement of the elements on an element’s

Accepted Answer

atomic mass

Question 4

Elements that share properties of both metals and nonmetals are called

Accepted Answer

semiconductors

Question 5

One of the important ideas about Mendeleev’s periodic table was that he predicted new

Accepted Answer

elements

Question 6

Elements that are usually shiny are ____________________.

Accepted Answer

metal

Question 7

Which element is a semiconductor?

Accepted Answer

silicon

Question 8

Which statement about noble gases is correct?

Accepted Answer

They exist as single atoms rather than molecules

Question 9

Why might a jewelry designer prefer to work with metal rather than a nonmetal? Explain.

Accepted Answer

all of the above

Question 10

Ionization refers to the process of

Accepted Answer

Losing or gaining electrons

Question 11

The ____________________ are located in the center of the periodic table.

Accepted Answer

transition metals

Question 12

Which statement about the alkali metals is correct?

Accepted Answer

located in the left-most column of the periodic table

Question 13

Noble gases are nonreactive gaseous elements that are located in Group ____________________

Accepted Answer

18

Question 14

A group’s elements react similarly because of their ____________________.

Accepted Answer

valence electrons

Question 15

Group 18 noble gases are relatively inert because

Accepted Answer

Their s and p orbitals are filled

Question 16

The order of elements in the modern periodic table is based on an element’s

Accepted Answer

atomic number

Question 17

Elements within the same group have similar properties because they have the same number of

Accepted Answer

valence electrons

Question 18

The elements in a family in the periodic table have similar _________ and _________ properties.

Accepted Answer

chemical and physical

Question 19

Elements called ____________________ can conduct heat and electricity under certain conditions.

Accepted Answer

semiconductors

Question 20

Elements in a family often have similar

Accepted Answer

appearance

Questions 20