University:
College
Course:
College Physics
Academic year:

2022
Views:

116

Pages:

2
Author:

5CelestialChronicle

How to Count Atoms 1 . The symbol of an element represents one atom of that element. Na= e.g. 2. A subscript is a number written at the lower right corner behind the symbol of an element. II there is more than one atom of the element, then a subscript is used to indicate the number of atoms. 3. A subscript outside a bracket multiplies all the elements inside the brackets. 4. a) A coefficient is a number written in front of a chemical symbol and indicates the number of atoms of that element. e.g. 3C= OR b) A coefficient is a number written in front of a chemical formula and indicates the number of molecules of that compound. **NOTE: A coefficient multiplies the number of atoms of each element in the formula. 3 CuS04 = Counting Atoms Worksheet Use the Periodic Table to complete the following charts. Type of Atom #of Atoms Type of Atom # of Atoms Type of Atom # of Atoms Type of Atom #of Atoms Type of Atom #of Atoms Total Total Type of Atom # of Atoms Total Total Type of Atom #of Atoms Total Total Type of Atom Total #of Atoms Total