Elias observed a sample in the classroom. the sample was a liquid at room temperature. he performed a conductivity test and found that it did not conduct electricity. which classification would best fit the sample?
a) ionic
b) metal
c) nonmetal
d) salt

C.  nonmetal.

Explanation:

It is not ionic because it did not conduct electricity.

There is only one liquid metal  at room temperature and that is mercury, which will conduct electricity.

A salt is usually solid at room temperature and if it is in solution will conduct electricity.

c. is the answer

by love gaming

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.