Ch. 1 - Atoms, Elements, Compounds, and Mixtures
About this set
Created by:
rkuhl on October 30, 2008
Subjects:
models of the atom, the simplest matter, compounds and mixtures
Classes:
Biology, Chem, Physical Science, LCMS T. Green Science, ATScience-Class2012, Dodgen Middle School Students (see more)
Log in to favorite or report as inappropriate.
Order by
15 terms
Terms | Definitions |
|---|---|
 element | matter made of atoms of only one kind |
| electrons | negatively charged particles in an atom |
| proton | positively charged particles in an atom |
| neutron | neutrally charged particle in an atom |
| electron cloud | region surrounding the nucleus that contains the electrons |
| atomic number | the number of protons in the nucleus of each atom of that element |
| isotopes | atoms of the same element that have different numbers of neutrons |
| mass number | number of protons plus the number of neutrons in an atom |
| atomic mass | weighted average mass of the isotopes of an element |
| metals | generally have a shiny or metallic luster and are good conductors of heat and electricity |
| nonmetals | usually dull in appearance and most are poor conductors of heat and electricity |
| metalloids | elements with characteristics of metals and nonmetals |
| substance | matter that has the same composition and properties throughout |
| compound | substance whose smallest unit is made up of atoms of more than one element bonded together |
| mixture | when two or more substances come together but don't combine to make a new substance |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.
Set Champions
Scatter Champion
14.5 secs by ZETTA_3_T_H_4_N
Space Race Champion
152,450 points by rikuraccoon
Speller Champion
100% correct by Arsenal7Rulez
Completed “Learn” mode
sciencerocks101 , StarbucksCoffeex3 , Kljohnson , peanutgirl1 , jayda_burghardt , LCKlickstein , OmarBakir , tandra88 , wmschwartz , lilacdolphin28 , flowers55 , cutey42 , YLFNOGARD , meg1011 , allie-u (See all 38)