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;
21 Cards in this Set
- Front
- Back
|
Family |
a column of elements in the periodic table |
|
|
Period |
a row of elements in the periodic table |
|
|
Nonmetal |
an element or substance that is not a metal |
|
|
Metal |
a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
|
|
|
Noble Gas |
any of gaseous elements in the periodic table |
|
|
Atomic Mass |
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom
|
|
|
Atomic Number |
the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
|
|
|
Density |
the degree of compactness of a substance |
|
|
Reactivity |
the state or power of being reactive or the degree to which a thing is reactive.
|
|
|
Metalloid |
an element whose properties are intermediate between those of metals and solid nonmetals. |
|
|
Dmitri Mendelleev |
Russian chemist Dmitri Mendeleev (also Dmitrii Mendeleyev) created the first valid periodic table of the elements in 1869.
|
|
|
Chemical Symbol |
an abbreviation or short representation of a chemical element; the symbols in the periodic table. Natural elements all have chemical symbols of one or two letters; some man made elements have three-letter symbols.
|
|
|
Periodic Table of Elements |
a chart of the chemical elements that displays them in rows horizontally in order of increasing atomic number and vertically according to similarity of the chemical properties of their atoms.
|
|
|
Property |
an attribute, quality, or characteristic of something.
|
|
|
Steady State |
an unvarying condition in a physical process, especially as in the theory that the universe is eternal and maintained by constant creation of matter.
|
|
|
Luster |
a gentle sheen or soft glow, especially that of a partly reflective surface.
|
|
|
Ductile |
(of a metal) able to be drawn out into a thin wire.
|
|
|
Corrosion |
the process of destroying metal, stone, or other materials
|
|
|
Malleable |
(of a metal or other material) able to be hammered or pressed permanently out of shape without breaking or cracking.
|
|
|
Conductor |
A material or an object that manages heat, electricity, light, or sound. Electrical conductors contain electric charges (usually electrons) that are relatively free to move through the material; a voltage applied across the conductor therefore creates an electric current.
|
|
|
Valence Electrons |
The valence electrons (VE) are the electrons in the outer shell of an atom. The valence electrons are the ones involved in forming bonds to adjacent atoms.
|
