Q:

What is an easy way to remember the first 20 periodic elements?

A:

An easy way to remember the first 20 elements is to use a mnemonic, such as H. Helen Little Beryl Brown Chews Nuts On Friday Neights, NaMgAl SiPS Chlorine After Kissing Caboys. The first two letters of each of the words corresponds with the elements on the table.

The first 20 elements are hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, flourine, neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, argon, potassium and calcium. Of these elements, 12 have symbols that correspond to the first one or two letters of the name, but the rest may have different letters that correspond to them. For example, the periodic symbol for potassium is K. The majority of symbols are made up of a combination of the first letter and one middle letter. The first 20 of the elements that are on the table are among the most common elements that are found throughout the universe and are some of the most important elements in the entire system.

The system for writing the elements is dependent on what the element is. Gaseous and ionic molecules are written differently and according to the type of gas or ion they contain. Elements can attach to each other and often do so to form compounds. These compounds list how many units of each element there are and organize the elements in order from the strongest to the weakest in the compound.


Is this answer helpful?

Similar Questions

  • Q:

    How do you improve memory?

    A:

    One way to improve memory is to exercise, according to Discovery. Exercise allows greater blood flow and oxygen to the brain, improving memory. Another way to boost memory is to reduce stress factors. Seeking treatment for depression and reducing anger and anxiety also improves memory.

    Full Answer >
    Filed Under:
  • Q:

    When do we use critical thinking in everyday life?

    A:

    When an individual can determine whether a problem is under control or beyond his control and can recognize his limitations regarding money, time and power, then he is using critical thinking in everyday life. However, that can only be accomplished with regular practice, according to the Foundation for Critical Thinking.

    Full Answer >
    Filed Under:
  • Q:

    How many elements are in the periodic table?

    A:

    There are 118 known elements on the periodic table. The most recently discovered element, Ununoctium, was first reported by Russian scientists from Dubna in 2002.

    Full Answer >
    Filed Under:
  • Q:

    How do you use craft foam to make a dinosaur costume?

    A:

    One quick, easy way to make a dinosaur costume with craft foam is to start with a hooded sweatshirt or jumpsuit and attach foam details, such as horns, spikes, scales or claws. Craft foam, also called EVA foam, can easily be hot-glued to felt and other fabrics to make a speedy yet creative costume.

    Full Answer >
    Filed Under:

Explore