Quiz 1 Flashcards
Sublimation
Physical change from solid to gas. Eg. Ice sublimating our of trays in the freezer.
Deposition
Gas to solid
Condensation
Gas to liquid
Evaporation
Liquid to gas
Ion
Charged atoms
Cations
Positive Ions. Ions with more protons than electrons.
Anions
Negative Ions. Ions with more electrons than protons.
Which elements form cations?
Metals
Which elements form anions?
Non-metals
Periods
Rows on the periodic table.
Groups
Columns on the periodic table.
Transition Elements
Groups 3-12
Main Group or Representative Elements
1-2 and 13-18
Metals, Nonmetals and Metaloids
Characteristics of Metals
- Solid at room tempertature, excepts Hg
- Shiny
- Conducts heat and electical current
- Malleable
- Ductile
- Loses electrons to form cations
- 75% of the periodic table is metal
Characteristics of Metaloids
- Properties of metals and non-metals
- Solid at room temperature
- Semiconductors, intermediate conductivity which can be changed and controlled. This makes them useful in manufacturing.
Characteristics of Nonmetals
- Can be found in all three states (solid, liquid, gas)
- Poor conductors
- Solids are brittle at room temperature
- Gains electrons to become anions
- Excepts for H, found mostly in the upper right hand corner of the periodic table.
Alkali Metals
- Groups 1A
- lithium, sodium, potassium, rubidium, and cesium,
- Incredibly reactive
- Very silvery and soft
- Combines rapidly with oxygen, chlorine and hydrogen to form salt structures. Most salts are very water soluble.
Alkaline Earth Metals
- Group 2A
- beryllium, magnesium, calcium, strontium, and barium
- Very reactive, particularly with water. Though some elements require heat to be reactive.
- Shiny and silvery-white
- Combine rapidly with oxygen and hologens
Chalcogens
- Group 6A
- oxygen, sulfur, selenium, tellurium, polonium, livermorium
- solid when soft
- poor conductors
- form compounds easily
- S and O very reactive with metals to form salts
Halogens
- Groups 7A
- fluorine, chlorine, bromine, iodine, astitine
- Highly reactive, especially with alkali metal and alkaline earth metals
- “Salt-forming elements” Gases at room temperature
- Very reactive with most other elements
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