Chapter 2: The Periodic Table Flashcards
1
Q
How is the periodic table arranged?
A
in order of increasing atomic number, chemical and physical properties show a repeating pattern
2
Q
What do elements in the same group (column) have in common?
A
they have similar properties
3
Q
Group 1A
A
Alkali Metals
4
Q
Group 2A
A
Alkaline Earth Metals
5
Q
Group 6A
A
Chalcogens
6
Q
Group 7A
A
Halogens
7
Q
Group 8A
A
Noble Gases
8
Q
What are the properties of Metals?
A
- shiny luster, vary in color although most are silvery
- malleable and ductile
- good conductors of heat and electricity (physical property)
- most metal oxides are ionic solids that are basic (ionic compounds)
- tend to form cations in aqueous solution
- high melting point
9
Q
What are the properties of Nonmetals?
A
- no luster, various color
- solids are usually brittle; they can be hard or soft
- poor conductors of heat and electricity
- most nonmetal oxides are molecular substances that form acidic solutions (molecular compounds)
- low melting point
- tend to form anions or oxyanions (oxygen-containing anions) in aqueous solution
10
Q
What are the properties of metalloids?
A
- Have some metallic properties, but lack some
- Electrical conductivity in between that of metals and nonmetals
- Several metalloids are electrical semiconductors (Eg: silicon)
