1. Atomic Structure Review Which of the following is NOT true about electrons? a) They have a negative charge b) They are the heaviest subatomic particle c) They are the lightest subatomic particle d) They are located outside the nucleus

2. Atomic Structure Review What is the relative mass of an electron? a) 1/1840 the mass of a hydrogen atom b) 1/1840 the mass of a proton + neutron c) 1/1840 the mass of a carbon-12 atom d) 1/1840 the mass of an alpha particle

3. Atomic Structure Review Which of the following is NOT true about protons? a) They are one of the heaviest subatomic particles b) They are located in the nucleus c) They have a positive charge d) They always equal the number of neutrons in an atom

4. Atomic Structure Review Which of the following is true about subatomic particles? a) Electrons are negatively charged and are the heaviest subatomic particle. b) Protons are positively charged and the lightest subatomic particle. c) Neutrons have no charge and are the lightest subatomic particle. d) The mass of a neutron nearly equals the mass of a proton.

5. Atomic Structure Review The number of electrons in a neutral atom is equal to the number of protons and neutrons. a) True b) False

6. Atomic Structure Review The atomic number of an element is equal to the total number of which particles in the nucleus? a) Protons b) Electrons c) Neutrons d) Protons and neutrons

7. Atomic Structure Review Atoms are mostly empty space a) True b) False

8. Atomic Structure Review Atoms of the same element can have different masses. a) True b) False

9. Atomic Structure Review The number of neutrons in the nucleus of an atoms is found by subtracting the atomic number from the mass number of the isotope. a) True b) False

10. Atomic Structure Review In an isotope symbol, the atomic number is in the top left corner. a) True b) False

11. Atomic Structure Review The mass number of an isotope is equal to the number of a) Protons b) Neutrons + protons c) Electrons + protons d) electrons

12. Atomic Structure Review The nucleus of an atom is positively charged and has more protons than neutrons. a) True b) False

13. Atomic Structure Review There are _____ neutrons in an atom of phsohporus-32. a) 15 b) 32 c) 49 d) 17

14. Atomic Structure Review Isotopes of the same element have different numbers of protons. a) True b) False

15. Atomic Structure Review The top number in an isotope symbol is always the a) Atomic number b) Number of neutrons c) Number of protons d) Mass number

16. Atomic Structure Review The isotope tritium has _____ neutrons a) 0 b) 1 c) 2 d) 3

17. Atomic Structure Review In the name fluorine-19, the 19 represents a) The mass number b) The atomic number c) The number of protons and electrons d) The number of neutrons

18. Atomic Structure Review The average atomic mass of copper is 63.55 amu. Which isotope is most abundant? a) Copper-63 b) Copper-65

19. Atomic Structure Review One atomic mass unit is equal to which of the following a) The mass of a hydrogen-1 atom b) The mass of one electron c) The mass of one carbon-12 atom d) One-twelfth the mass of a carbon-12 atom

20. Atomic Structure Review The atomic mass of an element depends upon the a) Mass of each electron in that element b) Mass of each isotope of that element c) Relative abundance of protons in that element d) Mass and relative abundance of each isotope of that element

21. Atomic Structure Review What unit is used to measure average atomic mass? a) Angstrom b) Gram c) Nanogram d) Amu