Unit 1 AP Chem Flashcards
Terms : Hide Images [1]
| 6552879786 | qualitative data | observations that are not numerical in nature | 0 | |
| 6552883926 | quantitative data | numbers obtained through measurement | 1 | |
| 6552886947 | substance | form of matter with a definite composition. elements and compounds are substances | 2 | |
| 6552889905 | homogeneous mixture | a solution. a mixture whose composition is uniform throughout | 3 | |
| 6552892858 | heterogeneous mixture | a physical combination of two substances that is not uniform throughout | 4 | |
| 6552895406 | element | a substance that cannot be separated into simpler substances by chemical means | 5 | |
| 6552897150 | compound | a substance composed of two or more elements that are chemically combined | 6 | |
| 6552899449 | mass | amount of matter in an object | 7 | |
| 6552900946 | volume | space occupied by an object | 8 | |
| 6552900947 | density | mass divided by volume | 9 | |
| 6552902100 | intensive property | physical property that does not depend on the amount of substance present | 10 | |
| 6552903171 | nanometer | 1x10^9 meter | 11 | |
| 6552905037 | kilometer | 1000 meters | 12 | |
| 6552916310 | sig fig rule: addition and subtraction | answer should have as many decimal places as the number with the least amount of decimal places | 13 | |
| 6552917872 | sig fig rule: multiplication and division | answer should have as many sig figs as the number with the least amound of sig figs | 14 | |
| 6552923818 | law of definite proportions | different samples of the same compound always contain its constituent elements in the same proportion by mass | 15 | |
| 6552926307 | law of multiple proportions | if two elements can combine to form more than one compound the masses of one element that combine with a fixed mass of the other element are in ratios of small whole numbers | 16 | |
| 7307201210 | hydrated ionic compound | an ionic compound with water molecules trapped within the crystal lattice | 17 | |
| 7307203120 | anhydrous | referring to a hydrated ionic compound that has been heated to drive off the water | 18 | |
| 7307204863 | empirical formula | the simplest whole number ratio of atoms in a compound | 19 | |
| 7307205300 | molecular formula | formula of a compound that represents that actual number of atoms in a molecule | 20 | |
| 7307224139 | isotope | atom of an element with a different atomic mass due to a different number of neutrons in the nucleus | 21 | |
| 7307226428 | products of combustion of an organic compound | carbon dioxide and water | 22 | |
| 7307227881 | mass spectrum of an element | a graph which shows the percent abundance of each isotopes' mass for a particular element | 23 | |
| 7307229978 | precipitate | an insoluble ionic compound | 24 | |
| 7307230713 | limiting reactant | the reactant that is completely used up during a chemical reaction | 25 | |
| 7307241003 | ionization | when an electron is removed from an atom forming a 1+ charged ion | 26 | |
| 7397073073 | actual yield | amount of product produced through an experiment | 27 | |
| 7397075263 | theoretical yield | amount of product predicted through stoichiometry | 28 | |
| 9963848373 | cation | positive ion | 29 | |
| 9963848374 | anion | negative ion | 30 | |
| 9963850922 | valence electron | outer energy level electron | 31 | |
| 9963853983 | molar mass | the mass of one mole of a substance | 32 | |
| 9963853984 | Avogadro's number | 6.02x10 23 particles | 33 | |
| 9963858877 | atomic number | the number of protons in one atom of an element; defines the element | 34 | |
| 9963861403 | atomic mass | the number of protons + number of neutrons in one atom of an element | 35 | |
| 9963866115 | nucleus | central, dense part of an atom containing the protons and neutrons | 36 |