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;
23 Cards in this Set
- Front
- Back
Teyla Peregrina |
|
|
Acitinides |
An element in the second row of the rare earth elements in the periodic table |
|
Alkali Metal |
An element in Group 1 of the periodic table |
|
Atom |
The basic building block of most of the matter around us; the smallest particle of an element that has all the properties of that element |
|
Atomic Mass |
A measure of an atom's mass that is equal to the number of protons and neutrons in the atom's nucleus |
|
Atomic Number
|
The number of protons and neutrons in the nucleus of an atom
|
|
Compound |
A pure substance that forms when two or more elements join chemically in a fixed proportion |
|
Electron |
A tiny, negatively charged particle that moves around the nucleus of an atom |
|
Element |
One of the basic substances that combine to form all other substances; a substance that cannot be broken down into simpler substances by ordinary chemical means |
|
Group |
Elements in the same vertical column of the periodic table; also called family |
|
Halogens Family |
The elements in Group 17 of the periodic table |
|
Lathanides |
An element in the first row of the rare earth elements in the periodic table |
|
Matter |
Anything that has size and weight to it |
|
Metal |
An element that conducts heat and electricity well, is shiny, and can be hammered into sheets or drawn into wires |
|
Metalloid |
An element that has some properties of both metals and nonmetals |
|
Neutron |
A particle with no charge, found in the nucleus of an atom |
|
Nobel Gasses |
An element in Group 18 of the periodic table |
|
Nonmetal |
An element that does not conduct heat or electricity well and is dull and brittle or gaseous |
|
Nucleus |
The center of an atom, containing protons and neutrons; a large structure in a cell that controls many of its functions and contains its genetic material |
|
Period |
A horizontal row in the periodic table; a block of time on the geologic time scale during which unique rock layers were laid down |
|
Periodic Table |
A chart that organizes information about all the known elements according to their properties |
|
Proton |
A positively charged particle found in the nucleus of an atom |
|
Transition Metal |
An element in Groups 3 through 12 of the periodic table |