Question

which of the following best matches the description? molecule or atom which has lost or gained an electron. select one: a. isotope b. ion c. ph d. potential energy e. neutron f. latent heat g. acid h. respiration i. electron j. kinetic energy k. base l. enzyme m. nucleus n. combustion o. entropy p. photosynthesis q. proton

Explanation:

To solve this, we analyze each option:

• Option a (isotope): Atoms with same protons, different neutrons. Doesn't match.
• Option b (ion): Defined as an atom or molecule that has lost or gained an electron, resulting in a charge. Matches the description.
• Option c (pH): Measures acidity/alkalinity. Doesn't match.
• Option d (potential energy): Stored energy. Doesn't match.
• Option e (neutron): Neutral subatomic particle. Doesn't match.
• Option f (latent heat): Heat for phase change. Doesn't match.
• Option g (acid): Donates protons/H⁺. Doesn't match.
• Option h (respiration): Energy - producing process. Doesn't match.
• Option i (electron): Subatomic particle, not a charged atom/molecule. Doesn't match.
• Option j (kinetic energy): Energy of motion. Doesn't match.
• Option k (base): Accepts protons/H⁺. Doesn't match.
• Option l (enzyme): Biological catalyst. Doesn't match.
• Option m (nucleus): Center of atom. Doesn't match.
• Option n (combustion): Burning process. Doesn't match.
• Option o (entropy): Disorder measure. Doesn't match.
• Option p (photosynthesis): Energy - converting process. Doesn't match.
• Option q (proton): Positively charged subatomic particle. Doesn't match.

Answer:

b. ion