Some guy from the 20th century
acid test
Explanation:
the first test the chemist should do is an acid test
Answer:
Catastrophism, gradualism, and uniformitarianism I believe!
the answer is NOT D. do not use D. the answer looks to be B.
The first one is atoms cause they are all the same type of particles. The blue one is the molecules that is not compound cause they aren't connected to each other. The other two are compound cause two atoms of two different elements are bonded together.
