A condensed rapid review pass over the highest yield MCAT general chemistry facts for final week review.
39 cards · mixed cards · AI-written, checked twice. Edit anything.
- What does the atomic number of an element represent?
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The number of protons in its nucleus.- What is the mass number of an atom?
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The total number of protons plus neutrons in the nucleus.- What term describes atoms of the same element with different numbers of neutrons?
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Isotopes- What is the approximate value of Avogadro's number?
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6.022 x 10^23 per mole- What are valence electrons?
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The electrons in an atom's outermost energy shell.- What does the Aufbau principle state?
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Electrons fill the lowest energy orbitals available before filling higher ones.- What does the Pauli exclusion principle state?
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No two electrons in the same atom can share all four quantum numbers.- What does Hund's rule state?
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Electrons occupy degenerate orbitals singly before any orbital is doubly occupied.- How does atomic radius change moving left to right across a period?
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It decreases.- How does atomic radius change moving down a group?
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It increases.- How does first ionization energy generally change moving left to right across a period?
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It increases.- Which element has the highest electronegativity on the periodic table?
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Fluorine- What type of bond forms when electrons are transferred from a metal to a nonmetal?
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An ionic bond- What type of bond forms when two atoms share a pair of electrons?
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A covalent bond- What does VSEPR theory use to predict molecular geometry?
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Minimizing repulsion between electron pairs around a central atom.
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