Introduction to Table of Elements
Representative Elements
Transition Elements and other :)
True/False
Classify: Metal, Nonmetal or Metalloid
100
Elements that show properties of both metals and nonmetals are called ____________?
metalloids
100
Silvery solids with low densities and low melting points found in Group 1.
alkali metals
100
Series of radioactive elements
actinides
100
Iron is the most common metal in Earth's crust.
False. Aluminum is the most common metal is Earth's crust.
100
A gas at room temperature, and a poor conductor of electricity.
nonmetal
200
Most elements fall into this classification.
metals
200
A mixture of 2 or more elements, one of which is a metal.
alloy
200
Series of elements that are sometimes called rare earth elements.
lanthanides
200
The element silver is widely used in photography.
True
200
Has shiny appearance, is a poor conductor of electricity, and can be used as a semiconductor.
metalloid
300
Elements in groups 3-12 are called the ______________ elements.
transition
300
Elements that show moderate electrical conductivity.
semiconductors
300
Only nonmetal in group 1
hydrogen
300
Most of the actinides occur naturally in Earth's crust.
False. Most of the actinides are synthetic elements.
300
Can be drawn out into a thin wire, or be hammered into thin sheets.
metal
400
Basis for arranging elements in modern periodic table.
atomic number
400
Able to be hammered into thin sheets.
malleable
400
Most chemically inactive group of elements.
noble gases
400
Helium, argon, and radon are members of the halogen family.
False. They are members of the noble gas family.
400
Has a dull appearance and is brittle.
nonmetal
500
A row of elements in the periodic table whose properties change gradually and predictably.
period
500
Group of elements that form salts.
halogens
500
___________ is the most important transition element.
Iron
500
Both alkali metals and halogens are chemically very active.
True
500
Is a transition element.
metal
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