Periodic Table Quiz Part II - Representative Groups

Question 1

Aluminum is the most abundant metal in Earth's crust. It's found with oxygen in the mineral

Accepted Answer

bauxite

Question 2

These are two alkaline earth metals that are essential for biological processes.

Accepted Answer

Magnesium & Calcium

Question 3

The melting points of alkaline earth metals are much _____ than the alkali metals.

Accepted Answer

higher

Question 4

All alkaline earth metals have exactly _____ valence electrons.

Accepted Answer

two

Question 5

The reactivity of alkali metals _____ from the top of Group 1A to the bottom.

Accepted Answer

increases

Question 6

What does hydrogen, lithium & sodium have in common?

Accepted Answer

They all share one valence electron.

Question 7

Oxygen (Group 6A) is the most abundant _____ in Earth's crust.

Accepted Answer

element

Question 8

The elements in Group 7A are called _____.

Accepted Answer

Halogens

Question 9

Halogens react easily with most _____.

Accepted Answer

alkali earths, alkaline earth metals

Question 10

Except for water, most of the compounds in your body contain this element.

Accepted Answer

carbon

Question 11

This element is also in Group 4A and is found in quartz, sand and glass.

Accepted Answer

Silicon

Question 12

All of the noble gases (Group 8A) have eight valence electrons except for _____.

Accepted Answer

Helium

Question 13

Why was it so difficult to detect the Noble gas elements?

Accepted Answer

They don't react (normally0 with other elements., They are colorless & odorless.

Question 14

Besides nitrogen, fertilizers will often contain this Group 5A element.

Accepted Answer

Phosphorous

Question 15

Alkali metals in nature are so reactive that they are only found in _____.

Accepted Answer

compounds

Question 16

Group 3A is called the _____ family because it is named after the first element in the group.

Accepted Answer

Boron

Question 17

Group 5A contain these two non-metals.

Accepted Answer

Phosphorous & Nitrogen

Question 18

Why do elements in a group share similar properties?

Accepted Answer

Elements in groups have the same # of valence electrons.

Question 19

Two more elements also found in Group 6A include

Accepted Answer

Sulfur & Oxygen, Tellurium & Sulfur

Question 20

An element that does not react easily with other elements are not very useful.

Accepted Answer

FALSE

Questions 20