It's going to differ between people. Some people will have trouble staying focused on the prompt. Others will find difficulty in supporting their ideas. Still others may be unable to utilize grammar effectively.
Lavoisier organized a list of the known
elements of his day as four categories.
Newlands was the first to organize the
elements and show that properties repeated in a periodic way. Mendeleev and Meyer proposed periodic tables showing a relationship between atomic mass and elemental properties. Moseley organized the elements by atomic number instead of atomic mass.
Pretty sure it’s b. i could be wrong though
Answer:
A Positive
Explanation:
I got the question right on the test.
Answer:
Son
Explanation:
Just got 100%, but further explanation: Es and esta are both easy to rule out, as neither of them refers to "they" (Alan y Enrique), and estan does not work because of the weird rules. Tbh I feel like you just have to memorize them except in some cases where one just clearly makes more sense than the other.