The quantity of heat required to change the temperature of 1 kg of a substance by $1^{o}C$ is called its :

Specific heat is the amount of heat needed to raise the temperature of one kilogram of mass by 1 degree. ... The molar heat capacity is the heat capacity per unit amount (SI unit: mole) of a pure substance, and the specific heat capacity, often called simply specific heat, is the heat capacity per unit mass of a material.