Definitions
Define Semiconductor
material that conducts electricity at high temperatures but not at low temperatures
Where are metals located on the periodic table?
The left side
At room temperature, in what state of matter can most nonmetals be found?
Gas
True or False
Transition elements are metalloids.
False - they are metals
In which group would you find a halogen element?
group 17
Fill in the blanks.
The rows on the periodic table are called _______, while the columns are called ________.
periods, groups
Name two physical properties of metals.
High density, strength, and greater boiling and melting points
Why is Hydrogen located with the metals on the periodic table.
Though it behaves most like a nonmetal under earth's conditions, in liquid form it conducts electricity and has other properties similar to an alkali metal.
Where are metalloids located on the periodic table?
Between the Metals and Nonmetals
Where would you find a noble gas on the periodic table?
group 18
Define Luster
ability of a metal to reflect light
True or False.
Metals are good conductors of electricity, but not thermal energy.
False
True or False.
Nonmetals are poor conductors, but good insulators.
True
Fill in the blank.
Metalloids are an example of a ___________ because they conduct electricity at high temperatures, but not at low temperatures.
Semiconductor
What are the names of the two rows of elements located at the bottom of the periodic table?
Lanthanide and Actinide elements
What is the ability of a substance to be hammered or rolled into sheets?
Malleability
Fill in the blank.
Elements in the same group have ___________ chemical properties.
Similar
Halogens
Give one example of the uses of metalloids.
computers/electronics, water softeners (laundry products), fireworks
What are the names of the elements in groups one and two on the periodic table, respectively. (In that order)
alkali metal and alkaline earth metal
What is the Periodic Table?
chart of the elements arranged in rows and columns according to the elements’ physical and chemical properties
Name three distinct properties of Alkali Metals
React quickly with other elements (only occurs in compounds in nature), silvery, soft, low density
Why where the noble gases not found on Mendeleev's periodic table?
They had not been discovered yet because they do not form compounds naturally
What is the most abundant metalloid?
Silicon (Si)
What are the elements in groups 3-13 called?
Transition Elements