2 Physical Science Tutorials

These Physical Science tutorials are written by experienced educators, all of whom also offer private tutoring lessons. Get the Physical Science help you need, whether through these tutorials or through private tutoring lessons.

Mohs Hardness Scale

One of the most diagnostic properties of minerals is their hardness. This is determined by a minerals ability to scratch another rock, or on the other hand, a minerals ability to resist scratching. The softest minerals can be scratched with your fingernail, minerals a little harder can be scratched with a penny, minerals harder than…

^