Across
- 2. ability of an atom to attract bonding pairs of electrons to itself; describes how an atom holds on to its valence electrons
- 7. a gaslike state of matter consisting of positively charged ions, free electrons, and neutral particles; found in stars, the sun, solar wind, lightning, and fire; unlike gases, plasmas are good conductors of electrical currents
- 8. energy level, or stable state of energy, and configuration of electrons as they orbit the nucleus of an atom, and in order
- 10. in a closed system in changing from one form to another, matter and energy cannot be created or destroyed; in this sense, conservation means that the physical quantity of matter and energy is entirely preserved during transformations and reactions
- 12. compound that releases hydrogen ions in solution with water and that can accept a pair of electrons from a base
- 13. matter that is physically combined or blended; mixtures have variable composition and properties and can be homogeneous (uniformly mixed) or heterogeneous (nonuniformly mixed)
- 16. amount of solute it takes to saturate a certain quantity of solvent (at a given temperature); how much of a substance can dissolve in another substance
Down
- 1. when a chemical combination breaks up into simpler constituent parts; compounds dissociate into ions and dissociation is normally temporary and reversible in that when atoms or ions of the dissociated substance return to their original conditions, they recombine
- 3. a tiny particle that is the fundamental building block of all substances and whose properties determine the properties of an element made up only of those atoms
- 4. the original substance in a chemical reaction; either disappears or diminishes
- 5. anything that occupies space and has mass
- 6. matter with no definite volume or shape
- 7. compound that releases hydrogen ions in solution with water and that can accept a pair of electrons from a base
- 9. a form of energy transferred (by way of conduction, convection, or radiation) by virtue of a difference in temperature; heat is energy in transit; heat is energy flow, measured in energy units
- 11. a chemical substance that contains only one kind of atom and that cannot be broken down into simpler substances
- 14. the process whereby a heavy nucleus splits into two intermediate-sized nuclei, with the emission of neutrons and conversion of mass into energy that is released
- 15. any compound resulting from one or more elements joined by electron sharing