7. (1 point) All are not attributes of metals, except a electrical insulators b thermal instalators c. high melting points d. ductile 3. (point) What class of material might be useful at temperatures 1100C (2150"F)? a. pure metals 1. polymer-polymer composites C. ceramics-ceramic composites d lead-tin metal alloy 9. (12 points) For each material, indicate its material class Material Classes Steel 1 polymer Teflon 2 metal aluminum 3. ceramic plywood 4. composite fiberglass diamond Zip Lock bag material paper clip polyvinyl chloride (PVC) concrete paper 10. (3 points) Looking at materialt by powers of ten, in the space provided indicate the dimension of following length reales. quartz The human scale meter The nano scale The stomic scale meter 21 pointsName the only 3 of the six materials that changed your world for each aterial is only one strength and only one weakness for each material Also name only ont application for tach material States Streng Weimers