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;
15 Cards in this Set
- Front
- Back
|
Any of the second series of inner transition elements with atomic numbers from 90 to 103; all are radioactive. |
Actinide |
|
|
The elements in a vertical column of the periodic table |
Group |
|
|
One of the first series of inner transition elements with atomic numbers 58 to 71 |
Lanthanide |
|
|
An element that has luster, conducts heat and electricity and usually bends without breaking |
Metal |
|
|
An element with some physical and chemical properties of metals and other properties of nonmetals |
Metalloid |
|
|
An element from Group 18 that has a full compliment of valence electrons and as such is unreactive |
Noble gas |
|
|
An element that in general doesn't conduct electricity, is a poor conductor of heat, and is brittle when solid. Many are gasses at room temperature. |
Nonmetal |
|
|
A horizontal row in the periodic table |
Period |
|
|
The statement that the physical and chemical properties of the elements repeat in a regular pattern when they are arranged in order of increasing atomic number. |
Periodic Law |
|
|
the tendency to recur at regular intervals |
Periodicity |
|
|
An element that doesn't conduct electricity as well as metal, but that does conduct lightly better than a nonmetal |
Semiconductor |
|
|
Any of the elements in Groups 3 through 12 of the periodic table, all of which are metals |
Transition element |
|
|
Group 1 is known as the _________? |
Alkali metals |
|
|
Group 2 is known as the ____________? |
Alkaline earth metals |
|
|
Group 17 is known as the _________? |
Halogens |
