No. Although two such atoms are essentially chemically identical (they will chemically react in the same way), they are not completely identical.
Answer:
I believe the answer is "b". "During the experiment, the scientist has only one element, or variable, that is changed to test the hypothesis."
Explanation:
I remember from last year but I'm not totally sure. Good luck!
Answer:
Water is a compound. It contains more than one element
water is homogeneous
<span>Valence electrons are important because these are the only electrons involved with an atom's chemical reactivity.</span>
Calcium Flouride. It's an ionic bond. Cation + anion with the suffix -ide
