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| 14537643609 | acid | molecule that donates hydrogen ions and increases the concentration of hydrogen ions in a solution | 0 | |
| 14537643610 | adhesion | attraction between water molecules and other molecules | 1 | |
| 14537643659 | anion | negative ion that is formed by an atom gaining one or more electrons | 2 | |
| 14537643660 | atom | the smallest unit of matter that retains all of the chemical properties of an element | 3 | |
| 14537643611 | atomic mass | calculated mean of the mass number for an element's isotopes | 4 | |
| 14537643612 | atomic number | total number of protons in an atom | 5 | |
| 14537643613 | base | molecule that donates hydroxide ions or otherwise binds excess hydrogen ions and decreases the concentration of hydrogen ions in a solution | 6 | |
| 14537643614 | buffer | substance that prevents a change in pH by absorbing or releasing hydrogen or hydroxide ions | 7 | |
| 14537643615 | calorie | amount of heat required to change the temperature of one gram of water by one degree Celsius | 8 | |
| 14537643616 | capillary action | occurs because water molecules are attracted to charges on the inner surfaces of narrow tubular structures such as glass tubes, drawing the water molecules to the sides of the tubes | 9 | |
| 14537643617 | cation | positive ion that is formed by an atom losing one or more electrons | 10 | |
| 14537643618 | chemical bond | interaction between two or more of the same or different atoms that results in the formation of molecules | 11 | |
| 14537643619 | chemical reaction | process leading to the rearrangement of atoms in molecules | 12 | |
| 14537643620 | cohesion | intermolecular forces between water molecules caused by the polar nature of water; responsible for surface tension | 13 | |
| 14537643621 | compound | substance composed of molecules consisting of atoms of at least two different elements | 14 | |
| 14537643661 | covalent bond | type of strong bond formed between two atoms of the same or different elements; forms when electrons are shared between atoms | 15 | |
| 14537643622 | dissociation | release of an ion from a molecule such that the original molecule now consists of an ion and the charged remains of the original, such as when water dissociates into H+ and OH- | 16 | |
| 14537643623 | electron | negatively charged subatomic particle that resides outside of the nucleus in the electron orbital; lacks functional mass and has a negative charge of -1 unit | 17 | |
| 14537643624 | electron orbital | how electrons are spatially distributed surrounding the nucleus; the area where an electron is most likely to be found | 18 | |
| 14537643625 | electron transfer | movement of electrons from one element to another; important in creation of ionic bonds | 19 | |
| 14537643626 | electronegativity | ability of some elements to attract electrons (often of hydrogen atoms), acquiring partial negative charges in molecules and creating partial positive charges on the hydrogen atoms | 20 | |
| 14537643627 | element | one of 118 unique substances that cannot be broken down into smaller substances; each element has unique properties and a specified number of protons | 21 | |
| 14537643628 | equilibrium | steady state of relative reactant and product concentration in reversible chemical reactions in a closed system | 22 | |
| 14537643629 | functional group | group of atoms that provides or imparts a specific function to a carbon skeleton | 23 | |
| 14537643630 | hydrogen bond | weak bond between slightly positively charged hydrogen atoms and slightly negatively charged atoms in other molecules | 24 | |
| 14537643631 | hydrophilic | describes ions or polar molecules that interact well with other polar molecules such as water | 25 | |
| 14537643632 | hydrophobic | describes uncharged non-polar molecules that do not interact well with polar molecules such as water | 26 | |
| 14537643633 | ion | atom or chemical group that does not contain equal numbers of protons and electrons | 27 | |
| 14537643634 | ionic bond | chemical bond that forms between ions with opposite charges (cations and anions) | 28 | |
| 14537643635 | isotope | one or more forms of an element that have different numbers of neutrons | 29 | |
| 14537643636 | mass number | total number of protons and neutrons in an atom | 30 | |
| 14537643637 | matter | anything that has mass and occupies space | 31 | |
| 14537643638 | molecule | two or more atoms chemically bonded together | 32 | |
| 14537643639 | neutron | uncharged particle that resides in the nucleus of an atom; has a mass of one amu | 33 | |
| 14537643640 | nonpolar covalent bond | type of covalent bond that forms between atoms when electrons are shared equally between them | 34 | |
| 14537643641 | nucleus | core of an atom; contains protons and neutrons | 35 | |
| 14537643642 | octet rule | rule that atoms are most stable when they hold eight electrons in their outermost shells | 36 | |
| 14537643643 | orbital | region surrounding the nucleus; contains electrons | 37 | |
| 14537643644 | organic molecule | any molecule containing carbon (except carbon dioxide) | 38 | |
| 14537643645 | pH scale | scale ranging from zero to 14 that is inversely proportional to the concentration of hydrogen ions in a solution | 39 | |
| 14537643646 | polar covalent bond | type of covalent bond that forms as a result of unequal sharing of electrons, resulting in the creation of slightly positive and slightly negative charged regions of the molecule | 40 | |
| 14537643647 | product | molecule found on the right side of a chemical equation | 41 | |
| 14537643648 | proton | positively charged particle that resides in the nucleus of an atom; has a mass of one amu and a charge of +1 | 42 | |
| 14537643649 | radioisotope | isotope that emits radiation composed of subatomic particles to form more stable elements | 43 | |
| 14537643650 | reactant | molecule found on the left side of a chemical equation | 44 | |
| 14537643651 | solvent | substance capable of dissolving another substance | 45 | |
| 14537643652 | specific heat capacity | the amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius | 46 | |
| 14537643653 | sphere of hydration | when polar water molecules surround charged or polar molecules thus keeping them dissolved and in solution | 47 | |
| 14537643654 | surface tension | tension at the surface of a body of liquid that prevents the molecules from separating; created by the attractive cohesive forces between the molecules of the liquid | 48 | |
| 14537643655 | valence shell | outermost shell of an atom | 49 | |
| 14537643656 | van der Waals interaction | very weak interaction between molecules due to temporary charges attracting atoms that are very close together | 50 |
