What do I need t know for the test

1. What do I need t know for the test Subatomic particles Daltons atomic theory Atomic # and mass # Isotopes % abundance calculations Electron energy levels Atomic orbitals Electrons in atoms Emission spectra Photoelectric effect and photons p. 105-109 p. 103 p. 112-113 p.. 114-115 p. 116-118 p. 129 P. 131-132 P. 134- 137 p. 139- 140 p. 142- 145

2. What is a quantum of light called? • Muons • Photons • Excitons • electrons

3. What is the number of neutrons in 16O • 24 • 16 • 8 • 4

4. The smallest particle of an element that retains the properties of that element is… • Proton • Electron • Neutron • atom

5. Which of the following was originally Dalton’s atomic theory but since was revised: • The atoms of any one element are different From those of any other element b. Atoms are tiny indivisible particles c. Atoms of different elements can combine with one another in simple whole number ratios d. Compounds are made by combining atoms

6. An element has atomic number 76. the # of protons and electrons are: • 38 protons and 38 electrons • 76 protons and 76 electrons • 152 protons and 76 electrons • 76 protons and 0 electrons

7. How many neutrons does U-238 have? • 146 • 0 • 24 • 108

8. What is the next atomic orbital 1s, 2s, 2p, 3s, 3p • 3f b. 3d c. 4a d. 2d

9. How many protons, electrons and neutrons does an atom with atomic # 50 and mass # 125 have? • 50 protons, 50 electrons , 75 neutrons • 70 neutrons, 75 protons, 50 electrons • 120 neutrons, 50 protons, 75 electrons • 75 electrons, 50 protons, 50 neutrons

10. Which of the following electromagnetic wave has the highest frequencies? • Ultraviolet • Microwaves • X-rays • Gamma rays

11. Which discovery did J.J. Thompson make? • Atoms that combine do so in simple whole number ratios • Atoms contain tiny negatively charged electrons • Atoms contain a tiny positively charged nucleus • Atoms are always in motion

12. Particles in the nucleus of an atom are.. • Protons and electrons • Protons and neutrons • Neutrons and electrons • Electrons only

13. The smallest particle of an element that retains the properties of that element are • Protons • Electrons • Atom • neutron

14. The atomic number of an element is the total number of which particles in the nucleus? • Electrons • Protons and neutrons • Neutrons • Protons

15. Emission of light from an atom occurs when an electrons • Drops from a higher to a lower level of energy • Jumps from a lower to a higher energy level • Falls into the nucleus • Moves within its atomic orbital

16. What is the electron configuration of potassium? • 1s2 2s2 2 p10 3s2 3 p3 • 1s2 2s2 2p2 3s2 3p2 4s1 • 1s2 2s2 2p6 3s2 3p6 4s1 • 1s2 2s2 3s2 3p6 3d1

17. How are frequency and wavelength related? • Wavelength is determined by dividing frequency by the speed of light • Frequency equals wavelength divided by the speed of light • They are inversely proportional to each other • They are directly proportional to each other

18. Isotopes of the same element have different… • Numbers of protons • Atomic numbers • Numbers of neutrons • Numbers of electrons

19. What does the 84 in Krytpon-84 represent? • Twice the number of protons • The sum of the protons and electrons • The atomic number • The mass number

20. The sum of protons and neutrons in an atom equals the …. • Mass number • Nucleus number • Atomic number • Atomic mass

21. If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital? • Clockwise • Zero • Counterclockwise • Both clockwise and counterclockwise