Exam Review: Unit 7 - Chapter 19 - Elements & Their Properties Flashcards
At room temperature, most metals are _______.
Solid
Most metals are solid at room temperature, except __________, which is liquid.
Mercury
Metalloids are located along the _______ line.
Stair-step
_________ is the only metal on the stair-step line.
Aluminum
Metalloids are ___________ of heat and electricity.
Semiconductors
Solid to Gas
Sublimation
Liquid to Gas
Evaporation
Gas to Liquid
Condensation
Salts are formed from _________&___________
Alkali Metals and Halogens
________ is the only nonmetal on the left side of the stair-step. Why?
Hydrogen; It only has 1 valence electron
Most reactive metal
Francium
Least reactive metal
Lithium
Most reactive nonmetal
Fluorine
Least reactive nonmetal (excluding Noble Gasses)
Iodine
Iron Triad:
Iron, Cobalt, & Nickel
The Iron Triad is located in group(s) _____ and period(s) _____
Groups 8-10
Period 4
Coinage Metals:
Copper, Silver, & Gold
The Coinage Metals are located in group(s) _____ and period(s) _____
Group 11
Periods 4-6
Elements with an atomic number greater than 92:
Transuranium Elements
Define Allotrope:
The same element with different molecular structure
3 Allotropes of Carbon & their shapes:
Graphite (Sheets on top of one another)
Diamond (Right angles connecting)
Buckminsterfullerene (Soccer ball)
# of electrons in outer shell: Group 1:
1
# of electrons in outer shell: Group 2
2
# of electrons in outer shell: Groups 3-12:
Varies