PICLEC: GROUP IVA & IVB

Question 1

Known as “Tetrels”

Answer 1

GROUP IV - THE CARBON GROUP

Question 2

This group contains the following elements:
C, Si, Ge, Sn, Pb

Answer 2

GROUP IVA

Question 3

GROUP IVA
- This group are Allotropes and Amorphous

Answer 3

CARBON

Question 4

GROUP IVA - CARBON
CRYSTALLINE:
- In its pure native form, and considered as the hardest substances and scored 10 on Mohr’s scale
- Its colorless, tinted or black crystal

Answer 4

DIAMOND

Question 5

GROUP IVA - CARBON
CRYSTALLINE:
- Considered as soft, black shiny solid
- Its greek word “Graphein” = ‘to write’
- Utilized in lead pencils

Answer 5

GRAPHITE

Question 6

GROUP IVA - CARBON
- Coal,charcoal, coke

Answer 6

AMORPHOUS

Question 7

GROUP IVA - CARBON
- Known as ‘universal antidote’
- From destructive distillation of plant substances
- Adsorptive, used for the Treatment of stomach or intestinal disorders

Answer 7

ACTIVATED CHARCOAL

Question 8

GROUP IVA - CARBON
- Originated from animal bone, purified by dissolving in HCl and water
- It is similar to activated charcoal but less adsorptive

Answer 8

PURIFIED ANIMAL CHARCOAL

Question 9

GROUP IVA - CARBON
- Used with caution as Anthelminthic
- Main constituent of fire extinguishers

Answer 9

CARBON TETRACHLORIDE

Question 10

GROUP IVA - CARBON
- Known as “carbonic acid gas”

Answer 10

CARBON DIOXIDE

Question 11

GROUP IVA - CARBON
- Treatment of poisoning by CO, alcohol, methanol, morphine (Oxygen gas mixed with 5% CO2)

Answer 11

CARBON DIOXIDE

Question 12

GROUP IVA - CARBON
- Remedy for skin disorder (e.g. acne, eczema, psoriasis, warts)

Answer 12

CARBON DIOXIDE SNOW (dry ice)

Question 13

GROUP IVA - CARBON
- Solvent in rubber industry

Answer 13

CARBON DISULFIDE

Question 14

GROUP IVA - SILICON
- Known as “Purified kieselguhr” and “Purified tripoli”; Diatomaceous Earth

Answer 14

PURIFIED SILICEOUS EARTH

Question 15

GROUP IVA - SILICON
- A form of silica
- Used for absorbent and clarifying agent
- A polishing powder for metals

Answer 15

PURIFIED SILICEOUS EARTH

Question 16

GROUP IVA - SILICON
- Known as “Silica”

Answer 16

SILICON DIOXIDE

Question 17

GROUP IVA - SILICON
- Crystalline
- Amorphous
- Glass

Answer 17

SILICON DIOXIDE

Question 18

GROUP IVA - SILICON
- Known as quartz
- Quartz with impurities = Gems

Answer 18

CRYSTALLINE

Question 19

GROUP IVA - SILICON
- Agate, Jasper, Opal

Answer 19

AMORPHOUS

Question 20

GROUP IVA - SILICON
- Mixture of various silicates

Answer 20

GLASS

Question 21

GROUP IVA - SILICON
TYPE OF GLASS:
- Lead silicate + sodium silicate
- Known as the cheapest and common glass

Answer 21

SOFT GLASS

Question 22

GROUP IVA - SILICON
TYPES OF GLASS:
- Potassium silicate + Mg/Al oxides
- Acid resistant

Answer 22

HARD GLASS

Question 23

GROUP IVA - SILICON
TYPES OF GLASS:
- Low refraction, high dispersion (can dispense light)
- Used in making lenses for optical instruments
- Contains 50% lead

Answer 23

FLINT GLASS

Question 24

GROUP IVA - SILICON
TYPES OF GLASS:
- High refraction, low dispersion

Answer 24

CROWN GLASS

Question 25

GROUP IVA - SILICON TYPES OF GLASS: - Common in bottles - Soft glass

Answer 25

SODA LIME

Question 26

GROUP IVA - SILICON TYPES OF GLASS: - Very tough, lower coefficient for expansion - Used in chemical glassware and cooking utensils

Answer 26

BOROSILICATE GLASS

Question 27

GROUP IVA - GERMANIUM - Stimulates formation of RBC (Erythrocytes) Erythro = Red; Cytes = Cells - Treatment of anemia (Hematinic)

Answer 27

GERMANIUM DIOXIDE

Question 28

GROUP IVA - Resistant to very weak acids and alkalis - Used for household utensils, chemical apparatus

Answer 28

TIN

Question 29

GROUP IVA - TIN - Iron+tin (making tin cans)

Answer 29

TINPLATE

Question 30

GROUP IVA - TIN - For staphylococci infections - For Dentrifice (Anti-cariogenic and Anti-cavities)

Answer 30

STANNIC OXIDE

Question 31

GROUP IVA - TIN - As dihydrate - Tin salt - Used as mordant ( fixes the color/ the color stays)

Answer 31

STANNOUS CHLORIDE

Question 32

GROUP IVA - TIN - Known as “Fuming spirit of Libavius”

Answer 32

STANNIC CHLORIDE

Question 33

GROUP IVA - TIN - Known as “Artificial gold”

Answer 33

STANNIC SULFIDE

Question 34

GROUP IVA - Galena - Used for plumbing, water pipes, making storage batteries and paint pigments

Answer 34

LEAD

Question 35

GROUP IVA - LEAD - Principal primary ore of lead

Answer 35

GALENA

Question 36

GROUP IVA - LEAD - Known as “Sugar of lead”

Answer 36

LEAD ACETATE

Question 37

GROUP IVA - LEAD - As Lotion - Astringent - As Wash - Treatment of poison ivy

Answer 37

LEAD ACETATE

Question 38

GROUP IVA - LEAD - Known as “Goulard’s Extract” ; Extract of Saturn - Used as Astringent and Anti-inflammatory

Answer 38

LEAD SUBACETATE SOLUTION

Question 39

GROUP IVA - LEAD - Known as “Lead water”

Answer 39

DILUTED LEAD SUBACETATE SOLUTION

Question 40

GROUP IVA - LEAD - Known as “Litharge” ; Lead monoxide

Answer 40

LEAD OXIDE

Question 41

GROUP IVA - LEAD - Used in preparation of Lead subacetate solution

Answer 41

LEAD OXIDE

Question 42

GROUP IVA - LEAD - Known as “White lead”

Answer 42

LEAD CARBONATE

Question 43

GROUP IVA - LEAD - White lead - Used for paint pigment

Answer 43

LEAD CARBONATE

Question 44

GROUP IVA - LEAD - Known as “Cassel’s yellow”

Answer 44

LEAD CHLORIDE

Question 45

GROUP IVA - LEAD - Used as Astringent - As pigment - “Cassel’s yellow”

Answer 45

LEAD CHLORIDE

Question 46

GROUP IVA - LEAD - Known as “King’s yellow”

Answer 46

LEAD CHROMATE

Question 47

This group contains the elements: - Ti, Ze, Hf, Ce, Th

Answer 47

GROUP IVB- THE TITANIUM GROUP

Question 48

GROUP IVB- THE TITANIUM GROUP - Known as “Sons of the earth”

Answer 48

TITANIUM

Question 49

GROUP IVB- THE TITANIUM GROUP - Alloys (combination of metals) with steels - Used in aircraft, spacecraft, and missiles

Answer 49

TITANIUM

Question 50

GROUP IVB- THE TITANIUM GROUP - Used as white pigment in creams and paints (pharmaceutical paints) - Ward off light rays - Used for sun-screen preparations - Opacifying agent in capsule and tablet coatings

Answer 50

TITANIUM DIOXIDE

Question 51

GROUP IVB- THE TITANIUM GROUP - This element and its salts have little to no medicinal/pharmaceutical importance

Answer 51

ZIRCONIUM

Question 52

GROUP IVB- CERIUM - Used as Antiemetic (emetic/emesis=vomiting), especially during early stages of pregnancy

Answer 52

CERIUM OXALATE