Science Unit K Final
About this set
Created by:
nataliefittsy on May 10, 2010
Subjects:
Log in to favorite or report as inappropriate.
Order by
28 terms
Terms | Definitions |
|---|---|
 volume= | length x width x height |
| density= | mass/volume |
| unit of volume | cm3 |
| unit of density | g/cm3 |
| examples of physical changes | vaporization of puddle, crushing an empty can of soda |
| examples of chemical changes | iron combine with oxygen to form rust, hydrogen peroxide breaks down into water and oxygen when poured on cut |
| shape and volume of a solid | definite shape, definite volume |
| shape and volume of a liquid | no definite shape, definite volume |
| shape and volume of a gas | no definite shape or volume |
| pressure= | force/area |
| units of pressure | Pa, kPa |
| units of force | N |
| three particles in an atom | protons, neutrons, and eletrons |
| location of electrons | move around nucleus |
| location of protons and neutrons | part of nucleus |
| characterisitcs of metals | shiny, malleable, ductile, good conductors, hard, reactive |
| characterisitcs of metalloids | solid at room temp, brittle, hard, somewhat reactive |
| characteristics of nonmetals | poor conductors, reactive, dull, brittle, soft |
| why valence electrons are important | they determine how the atom reacts chemically with other atoms |
| why some atoms in a covalent bond have slight negative or positive charges | slightly negative atom is more electronegative and it attracts the shared electrons more than the slightly positive atom does |
| characteristics of covalent compounds | low melting points, don't conduct electricity |
| chemical symbol for nitrogen, hydrogen, oxygen | N, H, O |
| chemical symbol for gold | Au |
| chemical symbol for sodium | Na |
| information provided in each box on the periodic table (from top to bottom) | atomic number, chemical symbol, element name, atomic mass |
| three characteristic properties for any given substance | melting point, boiling point, density |
| information provided by element's group number | valence e- |
| information provided by element's period | number of electron shells |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.