Physical property-zinc's melting point, hardness of 2.5, density, chemical property-when zinc is added to dilute sulfuric acid, hydrogen is given off and the metal dissolves. It reacts slowly with oxygen gas to form zinc oxide.
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Physical properties can be observed without changing the identity and composition of the substance. This includes things like physical observations (color, texture) melting and boiling points, density, and state. Chemical properties describe how substances react with other substances. This means that properties that involve other substances will tend to be chemical properties.