Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
Atom |
-a very small particle that makes up most kinds of matter and consists of smaller parts called protons, neutrons, and electrons. |
|
|
Nucleus |
-positively charged, central (center) part of an atom |
|
|
Proton |
- positively charged particle located in nucleus of an atom |
|
|
Neutron |
-an uncharged particle located in the nucleus of an atom |
|
|
Electron |
-invisible, negatively charged particle located in a cloudlike formation that is outside the nucleus of an atom |
|
|
Orbit |
- the path of an electron around an atomic nucleusElectron Shell- the orbits outside the nucleus where electrons are found, a |
|
|
Valence electron |
-the electrons on the outer shell of an atom; determines an element’s chemical and physical properties |
|
|
Scientific Theory |
- a widely-accepted explanation that is supported by evidence and experimentation, but is not yet proven. |
|
|
Scientific law |
-a rule that describes a pattern in nature; has been proven true. |
|
|
Electron Cloud |
-spherical cloud surrounding the nucleus |
|
|
Periodic Table |
-a table of the chemical elements arranged in order of atomic number, arranged so that elements with similar properties appear in vertical columns |
|
|
Atomic Mass |
-average mass of an atom of an element. Can be found in the bottom of the element box. Tells the number of protons and neutrons in the nucleus |
|
|
Atomic Number |
-number of protons and electrons in the nucleus of each atom. Located in the top of the element box |
|
|
Period |
-horizontal rows of the periodic table |
|
|
Group |
-vertical columns of the periodic table |
|
|
Family |
-elements of the same group that share many physical and chemical properties |
|
|
Metal |
-elements that are good conductors of electricity that have a shiny or metallic luster |
|
|
Nonmetal |
-poor conductors of electricity and are dull in appearance |
|
|
Metalloid |
-an element that has some properties of both a metal and a nonmetal |
|
|
Luster |
-shiny or able to reflect light |
|
|
Conductivity |
-the ability to allow heat and electricity to pass through |
|
|
Conductor |
-lets electrons move through freely; an object with a high conductivity |
|
|
Semiconductor |
-conductivity between an insulator and most metals; an object with a low conductivity |
|
|
Insulator |
-stops the flow of electrons; an object without conductivity |
|
|
Malleability |
-the ability of a substance to be hammered into shapes (bendable) |
|
|
Ductility |
- ability to be drawn into wire |
