The answer would be C. carbon dioxide.
Correct, it is a start of a experiment, something that is asked first.
<span>The wave nature of an electron is indicated by its motion and the diffraction and interference of electrons in a beam.</span>
Answer:
The third option "A molecule of a compound is composed of at least two types of atoms" is correct
Explanation:
This question isn't about molecules, it's about elements and compounds.
Elements are made of one and only one type of atoms, while compounds are made of more than one type of atoms.
(Molecules are just groups of atoms, it doesn't matter what they're made of)
