3. physical properties of a metal
• hardness
• shininess
• malleable =can be pounded into shapes
• ductile =can be pulled out into a long wire
• conductor - can transmit heat & electricity
• magnetic
• most are solids at room temp.
mercury
(except ___________ )
6. chemical properties of a metal
reactivity
• __________= ease & speed at
which an element combines or
reacts with other elements
• some - very reactive (ie. sodium)
• others - unreactive (ie. gold)
7. • reactivity ease & speed at
__________=
which an element combines or
reacts with other elements
• some - very reactive (ie. sodium)
12. Group 1- alkali metals
– from Li Fr (not H)
– very, very reactive
Potassium reacting with water
– have 1 valence electron
Lithium reacting with water
13.
14.
15. Group 2- alkaline earth metals
• 2nd column
• Be Ra
• very reactive- never alone
• lose 2 valence electrons
• most common- Ca & Mg
16.
17.
18.
19. Groups 3-12 - transition metals
• bridge between very reactive metals
& less reactive metals
– ex: Fe, Ag, Pt
21. lanthanides & actinides-
rare earth elements
• found @ bottom of periodic table
• fit in periods 6 & 7
• placed at bottom for convenience
22. Neodymium, one of the lanthanide
elements, is used in manufacturing the
tiny speakers inside stereo headphones.
23. Curium, one of the actinide elements,
is used as a source of high-energy particles
that heat and provide power for certain
scientific equipment aboard the Mars
Exploration Rover.
28. • Element 110-118, elements with
three-letter symbols, have been
given temporary names and
symbols.
• In the future, scientists around the
world will agree on permanent
names and symbols for these
elements.