Ap chemistry exam - Study guides, Class notes & Summaries

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atomic number CORRECT ANSWER The same as the number of protons in the nucleus of an element; it is also the same as the number of electrons surrounding the nucleus of an element when it is neutrally charged. mass number CORRECT ANSWER The sum of an atom's neutrons and protons isotopes CORRECT ANSWER Atoms of an element with different numbers of neutrons Avogadro's number CORRECT ANSWER 6.022×10²³ particles per one mole Moles CORRECT ANSWER grams/molar mass Standard Temperatur...

Question 1 refer to the following compounds at 25∞C and 1.0 atm. (A) CO2 (B) PbO2 (C) CaO (D) N2O5 (E) Cu2O 1. Contains an element in a +1 oxidation state Questions 4-7 refer to the following species. (A) H2O (B) NH3 (C) BH3 (D) CH4 (E) SiH4 4. Has two lone pairs of electrons 5. Has a central atom with less than an octet of electrons 6. Is predicted to have the largest bond angle 7. Has a trigonal-pyramidal molecular geometry Questions #2 & 3 did not align with the

atomic number - Answer The same as the number of protons in the nucleus of an element; it is also the same as the number of electrons surrounding the nucleus of an element when it is neutrally charged. mass number - Answer The sum of an atom's neutrons and protons isotopes - Answer Atoms of an element with different numbers of neutrons Avogadro's number - Answer 6.022×10²³ particles per one mole Moles - Answer grams/molar mass Standard Temperature and Pressure (STP)...

AP Chemistry Exam Review: Physical Chemistry with Answers atomic radius - Answer>> distance from the nucleus to the "edge" of an atom, expressed in nm ionization energy - Answer>> the energy required to remove one electron from a neutral atom of an element electron affinity - Answer>> Energy released when an atom or ion in the gaseous state gains an electron. Increases from left to right and from bottom to top on the Periodic Table.

AP Chemistry Exam Concepts How is the molar mass given on the periodic table calculated? - Answer>> It is the average of the mass numbers of all known isotopes weighted by their percent abundance periods - Answer>> horizontal rows of the periodic table groups - Answer>> vertical columns of the periodic table mole - Answer>> 6.022 * 10^23

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