The school students who began to study chemistry quite often meet great difficulties, trying to learn names and symbols of chemical elements. It seems to them that it is an impossible task, elements more than 100. However there is a set of effective receptions which can help with it.
It is required to you
- Mendeleyev's table.
Instruction
1. Within the training program from you will not demand to remember all chemical elements. You need to learn only two-three dozen, and it is much easier. It is possible to remember chemical elements in the periods. Look at Mendeleyev's Table. In the first period only 2 elements: hydrogen and helium. It is possible to remember them. In the second period already 8 elements: lithium, beryllium, pine forest, carbon, nitrogen, oxygen, fluorine and neon. To remember 8 names not so easily. Therefore resort to associations. What term will be remembered at the word "lities" at once? Of course, lithium batteries accumulators in cell phones, laptops, digital cameras, video cameras.
2. The word "beryllium" is less known. Perhaps, you heard about beryllium bronze (the alloy having exclusive elasticity). If you are interested in minerals, you for certain heard about beryl which some types (for example, an emerald, aquamarine) belong to the category of gemstones. Well, and fans of creativity Conan Doylya can remember his story "Berillovaya Diadem".
3. How to remember the word "pine forest"? Boric acid almost for certain will be in each house first-aid kit. Remember about the great physicist Niels Bohr, the Nobel Prize laureate. And so on. "Carbon" perfectly is associated with the word "coal" and that the main components of air are nitrogen and oxygen, you know from elementary grades. About fluorine advertizing goes on, urging to use toothpaste with this component. And about inert gas neon and could not be said: multi-colored neon signs meet everywhere. In the same way, gradually remember elements in the third and subsequent periods.
4. It is possible to remember not in the periods, and in groups. Begin with the first main group: hydrogen, lithium, sodium, potassium, rubidium, caesium. The last element of group, frantion, is very little widespread. Remember that it most strongly expressed metal properties. After that you can learn 4 elements halogens from the seventh main group: fluorine – chlorine – bromine – iodine. Try to remember that bromine – the only nonmetal which is in liquid state, and iodine is in a firm state. The fifth element of group, astatine, as well as frantion, is very little widespread. About it it is worth knowing that it is the only halogen which shows property both nonmetal, and metal. And gradually likewise continue to learn the elements which are in other groups.