2. Atoms & Elements

Which scientist is credited with the discovery of the proton?

Stars are made up mostly of which two elements?

Which of the following best describes the molecule represented as O2?

Which of the following electronic transitions within a hydrogen atom is not possible?

Why do neutrons not affect the charge of an atom?

Which of the following best describes an atom?

In a water molecule (H₂O), which atom has a slightly negative charge?

Which part of an atom is positively charged?

How many protons are present in a neutral atom of neon (Ne)?

Which statement is true with respect to an atom?

Electrons have which type of electrical charge?

Which of the following best describes the structure of an atom?

Which phrase best describes an atom?

How many electrons are present in a neutral atom of aluminum?

Which subatomic particle is responsible for the chemical properties of an atom?