Complete the sentence.
Sediment settling to the bottom of a muddy puddle is a ().
A: physical change
B: chemical change
Loose matter such as sand and dirt is called sediment. Sediment settling to the bottom of a muddy puddle is a physical change.
The sediment sinks, and the water above becomes clearer. This separates the water from the sediment. But separating a mixture does not form a different type of matter.