2. Chemical Formula and Common Chemical Substance.pptx

2. Chemical Formula and Common Chemical Substance.pptx

1. 12 Mg Magnesium Understanding the Language of Chemistry 30 Zn Zinc Chemical Formula of Common Chemical Substance

2. Chemical Symbol A chemical symbol is a one- or two-letter notation used to represent an element. In chemical formulas, chemical symbols are used to denote the elements present in a compound and their proportions. It is like a shorthand or abbreviation used to represent a chemical element.

3. How many elements can you recognise from the chemical symbols below? Name as many as you can with the help of your peer. Au Mg Ni I K Hg Ca Al P Zn Ag C Symbol Scrabble

4. Subscript A small number written at the lower right corner of a chemical symbol It is a small number written slightly below and to the right of a chemical symbol in a formula. It indicates the number of atoms of that element in a molecule.

5. Chemical Formula H₂O NaCl ? It is a symbolic expression of a compound or substance. It is also described as shorthand of expressing the types and the number of atoms in a substance. The chemical formula also tells the number of each type of atom and the central atom of the molecule specifically if it is not a diatomic molecule.