Materials or Science

Questions (2)

1.Styrofoam is made with 98% air and 2% styrene, which is from petroleum oil. It is useful in society for its light weight,
1. 3 answers
2. asked by EzioTheTrue
3. 114 views
ranging minerals from the hardest to the softest. Chalk, fingernail. steel screw and paper clip
1. 3 answers
2. asked by Devin
3. 570 views