Metalloids
Which property do metalloids share with nonmetals
both are brittle
Which element in period 3 on the periodic table is a metalloid?
silcon (Si)
Which lists the elements in order from most conductive to least conductive?
Potassium (K), selenium (Se), germanium (Ge)
selenium (Se) germanium (Ge), Potassium (K)
Potassium (K), germanium (Ge), Selenium (Se)
Potassium (K), germanium (Ge), Selenium (Se)
A student is working with four different solid substances: sodium (Na), calcium (Ca), copper (Cu), and iodine (I). Which substance is most likely to break easily into many smaller pieces?
iodine
Which compound is the strongest acid?
HBr
Which properties are characteristics of metalloids?
intermediate conductivity and a high melting point.
Which element is a metalloid?
polonium (Po), silcon (Si), antimony (Sb)
Which list the elements in order from least conductive to most conductive?
Nitrogen(N), Antimony (Sb), bismuth (Bi)
nitrogen (N), bismuth (Bi), Antimony (Sb)
bismuth (Bi), antimony (Sb), nitrogen (N)
Nitrogen(N), Antimony (Sb), bismuth (Bi)
Any compound that has at least one element from Group 17 is called a
halide
Which is the least conductive?
Calcium, Scandium, or Titanium
Calcium
What property do metalloids share with nonmetals?
The metalloid that has three valence electrons?
boron
The design of a new computer processor requires that electric current be carefully controlled. Why might an engineer want to use a metalloid when designing a new computer processor?
Metalloids are semiconductors
Cecil is working with samples of chlorine (Cl), oxygen (O), bromine (Br), and silver (Ag). The samples are all at room temperature. Which substance is most likely the most dense?
silver
Which is the least conductive?
Cobalt, Nickel, Copper?
cobalt
Which statements describe properties that are unique to metalloids?
Metalloids are semiconductors, metalloids are amphoteric
Which list only metalloids?
arsenic (As), Sulfur (S), and Polnium (Po)
Antimony (Sb), Tellurium (Te), and Gallium (Ga)
Boron (B), germanium (Ge), and Tellurium (Te)
Boron (B), germanium (Ge), and Tellurium (Te)
Scientists describe any substance that shatters or breaks easily as being
brittle
Krypton is named after the Greek word that means “secret.” Which explains why krypton was most likely given this name?
Krypton is a noble gas, so it was difficult for chemists to find it, as though it was a secret.
Which is a noble gas?
oxygen, sulfur, chlorine, or neon?
Neon
Which group on the periodic table contain metalloids?
groups 13-17
The metalloids that has five valence electrons in the fourth shell?
Arsenic
Solar panels convert light energy from sunlight into electrical energy. What material is most likely used in solar panels, and why?
a metalloid is used because it is a semiconductor and can become more conductive when more light shines on it
The elements least likely to form bonds are found in group
18
Which is a Alkaline earth metals?
Hydrogen, nickel, strontium, caesium?
Strontium