Question 1
Wood floats in water and rocks sink; thus, the density of wood is ________.
◦ higher than that of water
◦ exactly the same as water
◦ lower than that of water
◦ unable to be compared to water, as they are two different sates of matter
Question 2
Talc and graphite are two of the lowest minerals on the hardness scale. They are also described by terms like greasy or soapy. Both have a crystal structure characterized by sheet-structures at the atomic level, yet they don't behave like micas. What accounts for their unusual physical properties?