Answer: Heterogeneous mixture
A mixture forms when different elements are put together and yet they are distinct. it means there is no change in the properties of individual components of a mixture. A mixture can be of two kinds: Homogeneous and Heterogeneous mixture. A homogeneous mixture is the one which has uniformity in its every part. For example: salt mixed in water is a homogeneous mixture. A heterogeneous mixture has visibly distinct components. The mixture was of iron fillings, sand and salt is a homogeneous mixture as the component parts are not uniformly mixed.