Basic chemistry help for students and teachers

 

Interactive Chemistry Worksheets for Students

 

Periodic table

Naming compounds

Basic formula

Simple compounds

Ionic compounds 1

Ionic compounds 2

Chemical suffixes

Old chemical names

Hydrocarbons - Alkanes

Alkanes, alkenes & alkynes

Alkanols to alkanoic acids

 

Common compounds

Common formula quiz

Acids, bases and salts

Covalent compounds

Printable worksheets
 

 

 

What is an element?

A. DEFINITION

Elements are

For example oxygen gas cannot be broken down into anything simpler so it is called an element.

Water on the other hand can be broken down into the simpler substances, hydrogen and oxygen. Water is not an element.

Elements are the building blocks of matter and combine with one another in chemical reactions to form new substances called compounds. eg. water, H2O


B. SYMBOLS OF ELEMENTS

There are about 90 naturally occurring elements.

Each element is given a name and a symbol. eg. Hydrogen, symbol H and Oxygen, symbol, O

Chemical symbols are used as a means of chemical shorthand for the elements.

  • They are listed in the Periodic table.
  • The first letter is ALWAYS a CAPITOL letter. eg. O for oxygen
  • If the element has two letters the second letter is always lower case.

eg. The symbol for the element Cobalt is Co and not CO which is chemical formula for carbon monoxide.
eg. The symbol for the element Nobellium is No and not NO which is chemical formula for nitrogen monoxide.


All of the elements that we know and their chemical symbols are listed in the periodic table of the elements.

  • The symbols of some elements are also based upon their Latin names.

 

SYMBOLS FOR ELEMENTS

 

One letter

Two letters

Latin

 

 

 

 

Aluminium

Al

 

Aurum (gold)

Au

 

 

 

 

Argon

Ar

 

Argentum (silver)

Ag

 

 

 

 

Americium

Am

 

 

 

 

 

 

 

 

 

 

 

 

 

Boron

B

 

Barium

Ba

 

 

 

 

 

 

 

Beryllium

Be

 

 

 

 

 

 

 

Bismuth

Bi

 

 

 

 

 

 

 

Bromine

Br

 

 

 

 

 

 

 

 

 

 

 

 

 

Carbon

C

 

Calcium

Ca

 

Cuprum (copper)

Cu

 

 

 

 

Chromium

Cr

 

 

 

 

 

 

 

Cobalt

Co

 

 

 

 

 

 

 

 

 

 

 

 

 

Fluorine

F

 

Francium

Fr

 

Ferrum (iron)

Fe

 

 

 

 

 

 

 

 

 

 

Nitrogen

N

 

Nickel

Ni

 

Natrium (sodium)

Na

 

 

 

 

Neodymium

Nd

 

 

 

 

 

 

 

 

 

 

 

 

 

Phosphorus

P

 

Platinum

Pt

 

Plumbum (lead)

Pb

 

 

(Plumber’s once used lead piping)