Unit 2 Review: The Periodic Table

Question 1

Elements on the periodic table are arranged in order of increasing -

Accepted Answer

atomic number

Question 2

Atoms of which of the following elements have the most similar chemical properties as Cd atoms?

Accepted Answer

Zinc (Zn)

Question 3

What conclusion can you make about the elements in this picture?

Accepted Answer

Carbon has fewer protons than Nitrogen

Question 4

Which group is made of non-reactive elements?

Accepted Answer

Group 18

Question 5

Which of the following groups of elements has the smallest atomic number in Period 4?

Accepted Answer

Group 1

Question 6

Which group is made of reactive metals?

Accepted Answer

Group 1

Question 7

What are columns called on the periodic table?

Accepted Answer

groups or families

Question 8

A stable atom that will not react must have how many valence electrons?

Accepted Answer

8

Question 9

What do we look at to determine an element's chemical properties?

Accepted Answer

valence electrons

Question 10

The most reactive metal is one with -

Accepted Answer

1 valence electron

Question 11

Atoms of aluminum, silicon, and phosphorus are most similar in terms of -

Accepted Answer

mass

Question 12

If you compare metals to nonmetals in the same period, metals tend to -

Accepted Answer

have a lower atomic mass

Question 13

Which elements would have the most similar chemical properties?

Accepted Answer

Helium and Neon

Question 14

Rows on the periodic table are called -

Accepted Answer

periods

Question 15

Which group is made up primarily of elements that are gases at room temperature?

Accepted Answer

Group 18

Questions 15