Metal alloys are materials used for building strong, sturdy structures; however, exposure to outside elements over time can weaken then. Explain what happens and how this happens.

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car