Question

1 - How does properties of materials help us?
2- Why is well water safer to drink than river water?​

Answer 1

Answer:

1) Properties like shape and mass may be different for different objects, even when they are made of the same material. Density is a useful property for making comparisons between different materials. ... Use this activity to learn more about density. Other properties of materials can include their viscosity and conductivity.

2) Well water is safe for drinking because river water contains polluted particles which is not suitable for drinking. And well water is safe because it doesn't contain any pollutants or any impurities that is harmful to us.