The physical quantities which are specified with the magnitude or size alone are called scalar quantities. For example, length, speed, work, mass, distance, entropy, energy, etc.
Vector quantities refer to the physical quantities characterized by the presence of both magnitude and direction. For example, velocity, displacement, force, torque, momentum, acceleration, etc.
Physical quantity
Definition
SI Unit
Velocity
The velocity of an object is the rate of change of its position with respect to a frame of reference and is a function of time.
meter/second
Distance
Distance refers to "how much ground an object has covered" during its motion.
Meter
Entropy
It is an extensive property of a thermodynamic system. It represents the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system
Joules per kelvin
Energy
It is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.