Periods Flashcards
Metals
typically shiny, conducts heat and electricity well, and is malleable and ductile
Physical Properties of Metals
luster, malleability, ductility, and conductivity
malleable
can be hammered or rolled into flat sheets or other shapes
ductible
can be drawn into wires
Corrosion
the gradual wearing away of a metal element due to a chemical reaction
Alkali Metals
Group 1, Most reactive, never found uncombined in nature, Found only in compounds, react by giving away an electron
2 most known Alkali Metals
Sodium & Potassium
Group that reacts most by giving away 1 electron..
Alkali Metals
highly reactive and soft, and typically stored in oil to prevent reaction with air and moisture
Alkali Metals
alkaline earth metals
Group 2, Good conductor of electricity, fairly hard, gray-white, React by losing 2 electrons, 2nd most reactive, never found uncombined
2 most know alkaline earth metals
Magnesium & Calcium
Calcium
essential part of teeth and bones
transition metals
Groups 3-12, most familiar metals, Good conductors of electrical current, Less reactive then 1 and 2,, form colorful compound, never found uncombined
Copper
commonly used in electrical wiring due to its high conductivit
Most familiar metals
Transition metals
Form Colorful compounds
transition metals
Mixed Group
Only some of the elements in groups 13 through 15 of the periodic table are metals, uncombined in nature
Most familiar elements of Mixed Group..
aluminum, tin, lead
Top row of the 2 rows placed below of the periodic table
Lantthanides
Lanthanides
Sometimes mixed with more common metals to make alloys
alloy
A mixture of two or more metals
Elements below the lanthanides
Actinides
Actinides
of the 4, occur naturally
Synthetic elements
elements with atomic numbers higher than 92, not found naturally
