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Is Kr the symbol for Kryptonite?

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Is Kr the symbol for Kryptonite - PowerPoint PPT Presentation

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Is Kr the symbol for Kryptonite?. Objectives. To learn about the relative abundances of the elements To learn the names of some elements To learn the symbols of some elements. What will Beryllium Be ?. Xe. F is for Fluorine. Boron = B. The Elements.

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  • To learn about the relative abundances of the elements
  • To learn the names of some elements
  • To learn the symbols of some elements

What will Beryllium Be?


F is for Fluorine

Boron = B


The Elements

  • All of the materials in the universe can be chemically broken down into about 110 different elements.
  • Compounds are made by combining atoms of the elements just as words are constructed from the letters in the alphabet but rules apply to govern the combinations.



a abundances of elements
A. Abundances of Elements
  • Nine elements account for about 98% of the earth’s crust, oceans and atmosphere.


a abundances of elements5
A. Abundances of Elements
  • The elements in living matter are very different from those in the earth’s crust
  • In the human body, oxygen, carbon, hydrogen and nitrogen are the most abundant elements.
element can have several scientific meanings
“Element” can have several scientific meanings

Microscopic form

Single atom of that



Macroscopic form

Sample of that

element large enough

to weigh on a balance


Generic form

When we say the human body contains the element sodium or lithium, we do not mean that free elemental sodium or lithium is present. Rather we mean that atoms of these elements are present in some form.


b names and symbols for the elements
B. Names and Symbols for the Elements
  • Each element has a name and a symbol.
  • The symbol usually consists of the first one or two letters of the element’s name.
  • Examples: Oxygen O Krypton Kr
  • Sometimes the symbol is taken from the element’s original Latin or Greek name.
  • Examples: gold Au aurum lead Pb plumbum

In your notes write the symbol of the 10 most common elements of the Earth’s crust and in the human body next to their names


Element Hangman

  • Give the symbol for the following elements:
    • Carbon
    • Cobalt
    • Cesium
    • Calcium
    • Copper
    • Chlorine
    • Cadmium
    • Cerium