Read the following descriptions of the element zinc and indicate which are physical properties and which are chemical properties.
Zinc melts at 420 °C.
When zinc granules are added to dilute sulfuric acid, hydrogen is given off and the metal dissolves.
Zinc has a hardness on the Mohs scale of 2.5 and a density of 7.13 g/cm3 at 25 °C.
It reacts slowly with oxygen gas at elevated temperatures to form zinc oxide, ZnO.