PART 1 (3A)

Question 1

GROUP IIIA is also known as the?

Accepted Answer

Boron Family

Question 2

What element are the most important in pharmacy?

Accepted Answer

Boron and Aluminum

Question 3

Only one element to be considered as abundant

Accepted Answer

Aluminum

Question 4

Most common metals and third most common element in the earth's crust

Accepted Answer

Aluminum

Question 5

Two elements that are more abundant

Accepted Answer

Oxygen and Silicon

Question 6

Tends to be more covalent than ionic, which is also referred to as metalloid

Accepted Answer

Boron Bonding

Question 7

This element may form both covalent and ionic bonds

Accepted Answer

Aluminum

Question 8

The metals of this group readily oxidizes when heated in air. And they are stable at ordinary temperatures. Is it true or false?

Accepted Answer

True.

Question 9

The oxides are readily reduced back to free metal

Accepted Answer

True

Question 10

The metal reacts readily with what elements?

Accepted Answer

Sulfur and Halogens

Question 11

white gelatinous ppt. of Al(OH)3

Accepted Answer

NH3

Question 12

Co(NO3)2 + NH3 à Co(AlO2)2

Accepted Answer

Thenard’s Blue Test

Question 13

adsorbs the color of the dye, aluminon producing a red lake

Accepted Answer

*Al(OH)3

Question 14

cobalt meta-aluminate

Accepted Answer

Blue ash

Question 15

will turn turmeric paper brownish red; while in basic or alkaline medium it will color the turmeric paper greenish black

Accepted Answer

Acidic solution of borate

Question 16

CH3OH + H2SO4 è (CH3)3BO3

Accepted Answer

Boron (Borate BO3 -3)

Question 17

methyl borate

Accepted Answer

green bordered flame

Question 18

• Non-metal • Component of glass

Accepted Answer

Boron

Question 19

Valuable substitute for diamond in glass cutting and gem polishing

Accepted Answer

Hardness of Crytalline Boron

Question 20

• Reacts with turmeric paper • Use in vulcanizing rubber

Accepted Answer

Borates

Alle Karten