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Test 4 chemistry
Chemistry is awesome!
| Question | Answer |
|---|---|
| model developed from indirect evidence? | The Atomic model |
| Recently the scanning/tunneling microscope has seen the atom. | true. |
| A greek philospher that stated that mmatter contained particles that could be subdivided infinetly? | Democritus |
| Greek word for atom? | Atomos |
| Smallest particle still capable of chemical reactions? | Atom |
| Every compound is formed of elements combined in specific ratios by mass that are unique for that compound? | Law of definite composition |
| the man who discovered that elements have different masses and the law of definite composition was?? | John Dalton |
| Discovered the electron? and was the maker of the plum-pudding model? | JJ thompson |
| Discovered protons and concluded that atoms consist mostly of empty space and a central nucleus.? | Ernest Rutherford |
| Conducted experiment using alpha particles.? | Hans Geiger |
| Protons have what type of charge? | Positive |
| Number of protons in an element | Atomic Number (Z) |
| Number of protons affects both the?? | Chemical and physical properties of an atom. |
| First man to observe neutrons? | James Chadwick |
| when elements move to lower energy levels they emit light called? | Spectroscopy |
| Man who proposed the idea principle energy levels of electrons and created the planetory model of the atom? | Neihls Bohr |
| energy levels are quantitized meaning electrons can only have energies in specific? | Quantities |
| Light consist in massless particles called ?? | photons |
| Photons were discovered by? | Albert Enstein |
| If waves can behave like particles than particles can behave like waves was stated by whom? | Louise de' Broglie |
| It is impossible to know the energy(motion and position of an electron at the same time? | The Heisenburg uncertainly principle. |
| The current atomic model is known as? | The quantum model. |
| describe the quantum model?? | a tiny nucleus surrounded by a cloud of electrons occupying orbitals. |
| 3 dimensional regions of probable position? | orbitals |
| what describes the location of electrons? | Quantum numbers |
| the principle quantum number does what? | identifies the main energy level and the probable distance fro the nucleus |
| all orbitals receive one electron with the same spin before they begin to pair up is the rule called? | Hund's Rule |
| Symbol for Nuetrons? | (N) |
| Number that identifies the spin of an electron? | The electron-spin number |
| Number that identifies the sub-level of an electron.? | Azimuthal Quantum number. |
| The four sub-level names are?? | s,p,d,f |
| Number that identifies the specific orbital of an electron? | magnetic quantum number. |
| the electron configuration for an atom is obtained by adding electrons to an atom with a lower atomic number is the principle called?? | The Aufba principle |
| atoms with the same number of protons but different number of neutrons are called? | Isotopes |
| the sum of an atoms protons and neutrons? | Mass number. |
| The atomic mass unit?? | (AMU) or (u) |
| The average mass of an element calculated by weighted average of an elements isotopes?? | Atomic mass |
| electrons in the out most principle energy levels are called?? | Valence electrons |
| an atom with a positive or negative charge is called? | An Ion |
| Ion with a positive charged is called? | Cation |
| ion with a negative charge? | anion |
| Adding or subtracting protons equals?? | New element |
| adding or subtracting neutrons equals?? | different isotopes |
| adding or subtraction electrons equals? | different ions |
| Principle that states that no two electrons in the same atom can have identical values for all four of their quantum numbers? | Pauli exclusion principle |
Created by:
Kyle Witt
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