Answer:
Each element has unique physical properties such as density, melting point, boiling point, etc. These properties can be used to identify an element using a reference book that contains such information about each element. Flame tests, atomic spectra, and spectroscopy can be used to identify some elements.
Explanation:
Pressure Plates there is different types of plates also
|F| = 112 - 67 = 45 N
F = 45 N ( to the left)