Reading...
Play button
Play button
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;
14 Cards in this Set
- Front
- Back
|
group/family
|
a vertical column of elements in the periodic table; elements in a group share chemical properties
|
|
|
period
|
in chemistry, a horizontal row of elements in the periodic table
|
|
|
metal
|
an element that is shiny and that conducts heat and electricity well
|
|
|
non- metal
|
an element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution
|
|
|
metalloid
|
elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors
|
|
|
alkali metals
|
one of the elements of Group 1 of the periodic table. lithium, sodium, potassium, rubidium, cesium, and francium.
|
|
|
alkaline metals
|
one of the elements of Group 2 of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium)
|
|
|
periodic table
|
an arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same column, or group
|
|
|
Periodic law
|
the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements
|
|
|
Henry Moseley
|
Was an English physicist who a great contribution to the science of physics.
|
|
|
Halogens
|
one of the elements of Group 17 of the periodic table (fluorine, chlorine, bromine, iodine, and astatine); halogens combine with most metals to form salts
|
|
|
noble gases
|
one of the elements of Group 18 of the periodic table (helium, neon, argon, krypton, xenon, and radon); noble gases are unreactive
|
|
|
Dmitri Mendeleev
|
He is credited as being the creator of the first version of the periodic table of elements. Using the table of elements he predicted the properties of elements that would later to be discovered.
|
|
|
Valence Electrons
|
an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
|
