The Language of Chemistry: Compounds and Radicals

This flashcard set covers the formulas for common chemical compounds and the symbols and valencies for basic (electro-positive) and acid (electro-negative) radicals as cataloged in Tables II, III, and IV of the lecture materials.

Hydrochloric acid

$$HCl$$

Sulphuric acid

$$H_2SO_4$$

Sulphurous acid

$$H_2SO_3$$

Nitric acid

$$HNO_3$$

Nitrous acid

$$HNO_2$$

Phosphoric acid

$$H_3PO_4$$

Boric acid

$$H_3BO_3$$

Sulphur dioxide

$$SO_2$$

Sulphur trioxide

$$SO_3$$

Nitrous oxide

$$N_2O$$

Nitric oxide

$$NO$$

Nitrogen trioxide

$$N_2O_3$$

Nitrogen dioxide

$$NO_2$$

Nitrogen pentoxide

$$N_2O_5$$

Carbon monoxide

$$CO$$

Carbon dioxide

$$CO_2$$

Silica (sand)

$$SiO_2$$

Caustic soda (Sodium hydroxide)

$$NaOH$$

Caustic potash (Potassium hydroxide)

$$KOH$$

Washing soda (Sodium carbonate)

$$Na_2CO_3$$

Baking soda (Sodium bicarbonate)

$$NaHCO_3$$

Limestone or marble (Calcium carbonate)

$$CaCO_3$$

Water

$$H_2O$$

Sulphuretted hydrogen

$$H_2S$$

Ammonia

$$NH_3$$

Phosphine

$$PH_3$$

Methane

$$CH_4$$

Aluminium

Symbol: $Al$, Valency: $3$

Ammonium

Symbol: $NH_4$, Valency: $1$

Barium

Symbol: $Ba$, Valency: $2$

Cuprous or Copper (I)

Symbol: $Cu$, Valency: $1$

Cupric or Copper (II)

Symbol: $Cu$, Valency: $2$

Ferrous or Iron (II)

Symbol: $Fe$, Valency: $2$

Ferric or Iron (III)

Symbol: $Fe$, Valency: $3$

Plumbous or Lead (II)

Symbol: $Pb$, Valency: $2$

Plumbic or Lead (IV)

Symbol: $Pb$, Valency: $4$

Mercurous or Mercury (I)

Symbol: $Hg_2$, Valency: $2$

Mercuric or Mercury (II)

Symbol: $Hg$, Valency: $2$

Stannous or Tin (II)

Symbol: $Sn$, Valency: $2$

Stannic or Tin (IV)

Symbol: $Sn$, Valency: $4$

Hypochlorite

Symbol: $ClO$, Valency: $1$

Chlorate

Symbol: $ClO_3$, Valency: $1$

Sulphite

Symbol: $SO_3$, Valency: $2$

Sulphate

Symbol: $SO_4$, Valency: $2$

Thiosulphate

Symbol: $S_2O_3$, Valency: $2$

Nitrite

Symbol: $NO_2$, Valency: $1$

Nitrate

Symbol: $NO_3$, Valency: $1$

Nitride

Symbol: $N$, Valency: $3$

Phosphate

Symbol: $PO_4$, Valency: $3$

Permanganate

Symbol: $MnO_4$, Valency: $1$

Dichromate

Symbol: $Cr_2O_7$, Valency: $2$

Ferrocyanide

Symbol: $Fe(CN)_6$, Valency: $4$