Which of the Following Is a Correct Statement About the Rutherford
Which of the following is a correct statement about the Rutherford scattering experiment?
A)The experiment provided an explanation of the discrete lines in atomic spectra
B)The experiment yielded evidence that electrons are charged particles but neutrons are not electrically charged
C)The experiment showed that the electrons contain nearly all of the mass of the atom
D)The experiment provided evidence that matter does not consist of atoms
E)The experiment indicated that at the center of the atom is a tiny and extremely dense nucleus
Which of the following statements about isotopes is/are correct?
I)They have different masses
Ii)They have different numbers of neutrons
Iii)They have different electrical charges
Iv)They have different nuclear symbols
V)They have different mass numbers
A)i and ii
B)i, ii, and iv
C)i, ii, and v
D)i, ii, iv, and v
E)All are correct
Which of the following statements is false?
A)Atoms of the same element that have different masses are called isotopes
B)The masses of isotopes vary because they have different numbers of electrons
C)The mass number of an isotope is the total number of protons and neutrons in the nucleus
D)You can find the mass number of an atom given the number of protons and neutrons, but without being given the number of electrons
E)Every atom of a particular element has the same number of protons
Which of the following statements is true?
A)Given the atomic number of an element, the atomic mass of the element can be calculated
B)An isotope is identified by its mass number
C)The number of neutrons in an atom determines the chemical reactivity of that isotope
D)The total contribution to the mass of an atom from protons and electrons varies among the atoms of an element
E)Mass differences among atoms of an element cannot be accounted for with our current understanding of the atom