1.1: Elements and Atoms
The elements (simplest chemical substances) found in an animal’s body are all made of basic building blocks or atoms. The most common elements found in cells are given in the table below with the symbol that is used to represent them.
| Element | Symbol |
|---|---|
| Calcium | Ca |
| Carbon | C |
| Chlorine | Cl |
| Copper | Cu |
| Iodine | I |
| Hydrogen | H |
| Iron | Fe |
| Magnesium | Mg |
| Nitrogen | N |
| Oxygen | O |
| Phosphorous | P |
| Potassium | K |
| Sodium | Na |
| Sulphur | S |
| Zinc | Zn |