none of your business!
Internal and external? 4real
Allotropes
structures and functional groups.
1. is the study of internal and external structures of the body and the physical relationships among body parts.
The external structures are observed. The internal structures can be observed using an ophthalmoscope (a lighted instrument) in a darkened room.
Isomers have different structures even though they have same compounds
The external nose is examined. The nasal mucosa and internal structures can be observed with the use of a penlight and a nasal speculum.
The physical properties of a textbook are **************************
physical
Physical properties of cement,StrengthShrinkageDurabiltysetting timeHeat of hydrationChemical resistanceFinenessTemperature
Shiny and silvery are not chemical properties. These are physical properties.
Physical and chemical properties of matter are useful because they can help you identify that substance. For example paper burns very easily and aluminum doesn't, this is how they can be described individually.