Matter is anything that occupies space and has mass. Every entity that has a physical existence is matter.
Matter is characterised by both Physical and Chemical properties.
1. Physical properties of matter - This is classified into two categories -
a. Extensive properties - These include mass, volume, length and all physically defined dimensions of matter.
b. Intensive properties - These include colour, odour, temperature, conductivity, lustre and other qualitative properties.
2. Chemical properties - These are related to the chemical changes that matter can undergo to generate new substances. These include acidity, basicity, oxidation, reduction, combustion etc.