In the list you have ten substances. Kaolin, the base, is 1, Rock Salt is 2, which indicates that Rock Salt is twice as hard as Kaolin. Iridium is 6, and six times as hard as Kaolin. Diamond is 10, which means that it is ten times as hard as Kaolin. Learning this list by picturing reminders with the word of the Code list will enable you to easily recall these ten substances and the degree of hardness compared with Kaolin. Atomic Weight Table Some students of Chemistry have learned the entire list of elements and their atomic weights. The following are a few examples of how the list can be arranged and learned. It will be excellent practice for you to use this method and make a list of your own. Element Code No. Reminder Wt. Code Word 1 Carbon TIE Carbine 12.005 Tin Sizzle 2 Hydrogen SNOW Hydrant 1.008 The Saucy Foe 3 Nitrogen HOME Night 14.01 Deer Sat 4 Oxygen WIRE Ox 16.0 Dash 5 Sulphur WHEEL Sulphur 32.06 Money Sash 6 Phosphorus SASH Fuss for us 31.04 Mad Sir 7 Sodium EGG Soda 23.0 Nome 8 Potassium IVY Pot 39.1 Mop It 9 Calcium WHIP Calsomine 40.07 Horse Sack 10 Iron TOES I Run 55.84 Lily Fire 11 Arsenic DOT Arson 74.96 Gray Page 12 Gold TOWN Gold 197.2 Dipping In Learning Foreign Vocabularies The principle of using a reminder can be applied with advantage in learning a foreign language. The majority may learn foreign words more easily and permanently by the Reminder Link. In this case the reminder is the connecting link between the English word and the foreign word. Those who usually learn foreign words only by laborious repetition will find a saving of time in learning by the reminder link. Spanish words: English Link Spanish cold freeze frio drink beer beber written inscribed escrito sing cantata cantar full complete completo sweet delicious dulce window ventilate ventana keep guard guardar sell vend vender Latin Vocabularies Latin is the base from which most modern languages are derived, and you will find in English a very large proportion of the words taken directly from the Latin source. This makes the learning of Latin Vocabularies simpler than any other. In a great many cases the word is a direct derivative and needs no reminder or intermediate step; for example, the Latin word ANIMAL is the same as in English, although pronounced differently; or Latin: ORNAMENTUM, and the English ORNAMENT. Be resourceful, draw upon your imagination. Note the following suggestions: English Reminder Latin