mystery
random
hodge podge
assortment
variety
100
row of elements
What is a period
100
contains elements that have similar physical or chemical properties
What is a group
100
groups 1,2,13-18
What are the representative elements
100
groups 3-12
What are the transition elements
100
element that has luster, is a good conductor of heat and electricity, is malleable and is ductile
What is a metal
200
usually gases or brittle solids at room temperature, poor conductors of heat and electiricty
What are nonmetals
200
an element that shares some properties with metals and nonmetals
What is a metalloid
200
group 1 elements
What are the alkali metals
200
group 2 elements
What are the alkaline earth metals
200
doesn't conduct electricity as well as a metal, but does conduct electricity better than a nonmetal
What is a semiconductor
300
group 17 elements, except astatine
What are the halogens
300
group 18 elements
What are the noble gases
300
a substance that can make something happen faster but is not changed itself
What is a catalyst
300
elements made in nuclear reactors and labs
What are synthetic elements
300
first series of inner transition elements, from cerium to lutetium
What are lanthanides
400
second series of elements, from thorium to lawrencium
What are actinides
400
published the first version of his periodic table in 1869, organized by atomic mass
who was Dmitri Mendeleev
400
changed Mendeleev's table to be arranged by atomic number
Who was Henry Moseley
400
has the lowest atomic number on the periodic table
What is hydrogen
400
abbreviations for the elements
What are symbols for the elements
500
group 13
What is the Boron Family
500
found in all living things
What is Carbon
500
iron, cobalt, and nickel
What is the Iron Triad
500
has the lowest melting point of any meta
What is Mercury
500
Orthodontists are using new _____ and ______ alloys for the wire on braces
What are nickel and titanium
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