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