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;
17 Cards in this Set
- Front
- Back
|
Alkali Metals
|
Group 1A; charge of +1 (1 valance electron) reactivity increases as u go from top to bottom; reacts violently w/ water
|
|
|
Alkaline Earth Metals
|
Group 2A; have a charge of +2; have 2 valance electrons; reacts w/ water
|
|
|
Atomic Mass Unit
|
AMU; one twelfth of the mass of a carbon12 atom
|
|
|
Group
|
A column of elements on the periodic table
|
|
|
Halogens
|
Charge of -1; 7 valance electrons; group 7A; most reactive nonmetals
|
|
|
Metalloids
|
Have properties of both metals and nonmetal, temperature affects conductivity
|
|
|
Metals
|
Left hand side, malleable, solid @ room temperature, shiny, ductile, good conductor
|
|
|
Noble Gases
|
Group 8A or 18; all gases w/ no color; un-reactive; full outer shell
|
|
|
Nonmetals
|
Poor conductors, gases or brittle solids, right side of periodic table
|
|
|
Periodic Law
|
The pattern of repeating properties displayed by elements in the periodic table
|
|
|
Periodic Table
|
An arrangement of elements in columns, based on a set of properties that repeats from row to row
|
|
|
Period
|
A row in the periodic table of elements
|
|
|
Transition Metals
|
In the center of the table, inner transition are on the bottom
|
|
|
Valence Electrons
|
The electrons on the outermost level of an atom
|
|
|
How is the Periodic Table Organized
|
The periodic table is organized according to atomic number
|
|
|
Describe the changes that occur in the elements as you move left to right and top to bottom
|
Across a period from left to right, the elements become less metallic in their properties. As you move from top to bottom they get more or less reactive.
|
|
|
Locate the metals, nonmetals and metalloids on the periodic table
|
Metals are on the right. Nonmetals are on the left. Metalloids are on a zigzag line between the two.
|
