Pipes are made of the element Lead so the answer should be d) lead pipe
The motion of particles can be changed by the temperature you put it at.
Answer:
35
Explanation:
because it's is still the same amount even if you freeze it
The substance which has definite composition with definite physical and chemical properties is said to be pure substance. These substances are not separated by the different physical techniques such as filtration, distillation, evaporation etc.
The clear water pumped from a deep aquifer is a pure substance because water is a pure compound which consist of constant single type of atoms or group of atoms and water has specific value of boiling and melting point. Water is also not separated into units or constituents by physical technique.
Hence, clear water pumped from a deep aquifer is a pure substance.
