Chemistry Chapter 6 The Periodic Table and Periodic Law Flashcards

2830730672	Atomic Number	The number of protons in the nucleus of an atom	0
2830731491	periodic law	the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements	1
2830731492	group	A column on the periodic table	2
2830732309	period	A horizontal row of elements in the periodic table	3
2830733165	representative element	Elements from groups 1, 2, and 13-18	4
2830733794	transition element	Elements in groups 3-12	5
2830733795	metal	Elements that are good conductors of heat and electric current.	6
2830735111	alkali metal	Group 1 elements	7
2830735921	alkaline earth metal	Group 2 elements	8
2830735922	transition metal	Elements in groups 3-12	9
2830736997	inner transition metal	Lanthanides and Actinides	10
2830737006	lanthanide series	the rare-earth elements with atomic numbers 57 through 71; having properties similar to lanthanum.	11
2830739193	actinide series	period seven elements that are radioactive	12
2830739194	nonmetal	elements that are generally gases or brittle dull-looking solids, they are poor conductors of heat and electricity	13
2830739645	halogen	Group 17 elements, highly reactive	14
2830739646	noble gas	Group 18 elements, extremely unreactive	15
2830740360	metalloid	have physical and chemical properties of metals and nonmetals, silicon is an example	16
2830810805	valence electron	Electrons on the outermost energy level of an atom	17
2830824250	ion	an atom or a bonded group of atoms that has a positive or negative charge	18
2830825082	ionization energy	the energy required to remove an electron from a gaseous atom	19
2830825083	octet rule	States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons	20
2830825887	electronegativity	A measure of the ability of an atom in a chemical compound to attract electrons	21