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| The first person to name the basic particle an "atom" was the ancient Greek philosopher ______. | Democritus |
| Which law states that "mass is neither created nor destroyed during ordinary chemical reactions or physical changes." | The law of conservation of mass |
| Mass is neither created nor ______ during ordinary chemical reactions or physical changes. | destroyed |
| Who disproved Dalton's theory that atoms are the smallest possible particles? | Chuck Norris when he smashed one with his spinning round-house kick. If you are the first one to email me saying "Chuck Norris Rules!!!" I will give you an extra credit point on the next quiz which will be called the Atomic Theory Quiz.,  |
| Thomson's ________ experiments measured the charge-to-mass ratio of an electron. | cathode-ray tube,  |
| ________ was able to determine the charge-to-mass ratio of an electron with his cathode-ray tube experiments., | J.J. Thomson, |
What's the last name of the scientist whose oil drop experiments allowed for the determination of the charge and mass of an electron?,  | Millikan, |
| Robert Millikan was able to measure the charge and mass of an electron with his ______ experiments. | oil drop, |
| Ernest Rutherford's _________ experiments led to the discovery of the nucleus. | gold foil,  |
| _______ discovered the nucleus with his gold foil experiment (1911)., | Rutherford, |
| Most of the alpha particles that Rutherford shot at the thin gold foil ______, indicating that atoms are mostly empty space., | passed through, |
| Most of the alpha particles that Rutherford shot at the thin gold foil passed through, indicating that atoms are mostly _______., | empty space, |
| The fact that a small percentage of the alpha particles that Rutherford shot at the thin gold foil seemed to bounce back was evidence for the presence of ______ in atoms., | a small dense nucleus, |
| The fact that a small percentage of the alpha particles that Rutherford shot at the thin gold foil seemed to ________ was evidence for the presence of a small dense nucleus in atoms., | bounce back, |
| The lowest energy state of an electron is called its _______ state. | ground |
| An electron that absorb the right amount of energy will move from the ground state to the ______ state. | excited |
| What is the last name of the scientist who first suggested that electrons can be thought of as waves? | de Broglie |
| What is the last name of the scientist who first suggested that it is impossible to know both the position and the velocity of an electron at the same time? | Heisenberg |
| What is the name of the principle that states that it is impossible to know both the position and the velocity of an electron at the same time? | the Heisenberg Uncertainty Principle |
| Louise de Broglie was the first to suggest that electrons can be thought of as both a particle and a ______. | wave |
| The Heisenberg uncertainty principle states that it is impossible to determine simultaneously both the position and __________ of an electron or any other particle. | velocity |
| What is the last name of the scientist who developed an equation that treated electrons as waves? | Schrodinger |
| _______ theory describes mathematically the wave properties of electrons and other very small particles. | Quantum |
| According to quantum theory, electrons do not travel around the nucleus in neat orbits, but instead exist in certain regions called ______. | orbitals,  |
The highlighted portion of the periodic table is called the ___ block.,  | d (This is where all of the transition metals are located), |
The highlighted portion of the periodic table is called the ___ block.,  | f, |
The highlighted portion of the periodic table is called the ___ block.,  | p, |
The highlighted portion of the periodic table is called the ___ block.,  | s, |
| Elements with 3 electron shells would be found in the ____ period. | 3rd |
Elements with the same number of electron shells as in the picture below can be found in the ___ period.,  | fourth, |
| Who created the first periodic table in 1869? | Mendeleev |
| Repeating properties are also called ____ properties. | periodic |
| The first periodic table was based on the ordering of elements by increasing _______. | atomic mass (today, it goes by increasing atomic number) |
| The first periodic table had several ___________ because some elements hadn't been discovered yet. | empty spaces |
| Who was the first person to organize the periodic table according to increasing atomic number? | Moseley (in 1911); Mendeleev had organized his periodic table by increasing atomic mass |
| The ___________ states that the physical and chemical properties of the elements are periodic functions of their atomic number. | Periodic Law |
| Thomson proposed the ________ model of the atom in which he envisioned positive and negative charged particles of the atom to be spread out evenly. | plum pudding,  |
| What's the last name of the scientist who correctly concluded that atoms are mostly empty space? | Lenard (Philipp Lenard proposed this in 1903) |
| ____________ were shot at gold foil, most of which passed through., | Alpha particles, |
| The ________ model of the atom postulated that electrons travel in fixed orbits around the nucleus. | Bohr |
| Electrons with more potential energy are _________ the nucleus than electrons with less potential energy. | further away |
| Electrons that are closer to the nucleus have _____ potential energy than electrons that are further away from the nucleus. | less |
| Electrons must _______ energy to move to orbits further from the nucleus. | absorb |
| Electrons _______ energy when they move to lower energy levels. | emit (same as "lose" or "give off" energy) |
