A) The vast distance between the nucleus of an atom and its orbiting electrons. B) none of the answers are correct. C) The vast distance between atoms in the vacuum of outer space. D) The vast distance between the neutrons and protons of the nucleus of an atom.
A) a lot of mass contains only a little energy. B) mass does not determine the energy in most matter. C) a very small mass is equal to a very large amount of energy. D) mass can move faster than the speed of light.
A) some of the mass is converted to the binding energy of the bond. B) the molecules of water lose neutrons. C) not all of the atoms are used. D) ions are formed.
A) Protons are negative, neutrons are positive, and their mass is almost the same. B) Neutrons are negative with smaller mass; protons are positive and much larger. C) Protons are positive, neutrons have no charge, and their masses are almost the same. D) Neutrons are negative with much larger mass; protons are positive with a smaller mass.
A) The nucleus gives the atom its size and electrons give the atom its mass. B) None of the answers are correct. C) The nucleus gives the atom its mass but electrons give the atom its size. D) Protons, neutrons and electrons all contribute to both the size of an atom and an atom's mass.
A) Atomic number. B) Mass number. C) Number of electrons. D) None of the answers are correct.
A) The number of electrons plus the number of protons, divided by 2. B) The number of electrons in orbit around the nucleus. C) The number of protons in its nucleus. D) The number of neutrons in its nucleus.
A) They have the same atomic mass but different atomic numbers. B) They have the same number of protons and neutrons but different atomic masses. C) They have the same number of electrons but different number of protons. D) They have the same atomic number but different atomic masses.
A) None of the answers are correct. B) The number of protons in an atom multiplied by 2. C) The number of neutrons and protons, minus the number of electrons in an atom. D) The number of neutrons plus the number of electron in the atom.
A) 6 B) 2 C) 8 D) 22 |