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What element group does dull luster, brittle, and insulator describe?
nonmetals
What physical properties did we use to classify metals, nonmetals, and metalloids?
luster, electrical conductivity, and malleability
What element group does Neon belong to?
nonmetal
What is the name of the element group that has characteristics of metals and nonmetals?
metalloids
In a container of water with layers of different liquids, which liquid is the least dense, and which is the most dense?
The layers that float on top of the water are least dense, the layers that sink below the water are the most dense.
What element group does conductor, malleable, and shiny luster describe?
metals
What describes a material that can be rolled into flat sheets?
malleability
What element group does Silicon belong to?
metalloid
What is a semiconductor?
conducts electricity better than nonmetals but not as well as metals
True or False: Metalloids are not as malleable or ductile, like metals.
True
Metals conduct what?
heat and electricity
What describes a material that can be pulled out into a long wire?
ductile
What element group does Aluminum belong to?
metal
True or False: Nonmetals are excellent insulators of heat and electricity.
True
Where are the metalloids located on the periodic table?
along the zig-zag line
What are two types of luster?
shiny and dull
What element group are insulators?
nonmetals
The numbers along the top that indicate the column are?
Groups
__________ conduct electricity better than nonmetals, but not as well as metals.
Metalloids
What are 17 metallic elements that share chemical properties and used in modern technology?
rare earth elements
True or False: Nonmetals are good conductors.
False
What is special about Rare Earth Elements?
Rare earth elements describes the 17 most plentiful minerals found in Earth's crust that are used to make many electronics.
Where are the metals located on the periodic table?
left side
Explain what you need to calculate density?
D=M/V You need the mass and the volume.
What units of measurement are used for measuring for density?
Mass- grams
Volume- mL or cm3