COMPOUNDS AND THEIR PROPORTIONS

COMPOUNDS AND THEIR PROPORTIONS 

All elements are represented by a chemical symbol. It is either a single capital letter, or a capital letter followed by a small letter.

Examples: Ca = calcium Cu = copper

C = carbon N = nitrogen

Combinations of symbols represent compounds. These compounds are called chemical formulas.

 

Example: H20 2 hydrogen atoms

1 oxygen atom

If no number is shown beside the symbol, a 1 is understood.

If more than 1 atom is present, a small number is shown after the atom to indicate how many atoms are in the compound.

NaHCO3 = Sodium Hydrogen Carbonate (baking soda) 1 atom Na = Sodium

1 atom H = Hydrogen

1 atom C = Carbon

3 atoms O = Oxygen

 

 

See also

SIMPLE MACHINE

AIR AND COMBUSTION

AN ALKALI

BASES AND INDICATORS

EVAPORATION AND BOILING

Leave a Comment

Your email address will not be published. Required fields are marked *

Get Fully Funded Scholarships

Free Visa, Free Scholarship Abroad

           Click Here to Apply

Acadlly