The first test you just

read about is for

appearance. if the

substance is a

crystalline solid, as

shown at right, then the

substance is likely

ionic

covalent

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

Is there a picture or answer choices?

What do you need with it’s not a question your just stating what it says

Answerchemical energy;