Ch 19 Mouse Mischief
Physical Science
Elements and their Properties
At room temperature, most metals are ____.
gases
liquids
radioactive
solids
The process by which solid iodine particles change directly to gas
without first becoming a liquid is called ____.
condensation
evaporation
ionization
sublimation
Elements that form salts by combining with metals are ____.
allotropes
fluorides
ionics
halogens
Substances that conduct an electric current only under certain
conditions are most likely to be ____.
metals
metalloids
noble gases
nonmetals
Different forms of the same element that have different properties
because of different atom arrangements are called ____.
allotropes
carbons
graphites
halogens
An allotrope of carbon that is soft and can be used as a lubricant is
____.
diamond
graphite
sand
silicon
An allotrope of carbon that is hard and is often used in jewelry is
____.
diamond
graphite
quartz
silicon
Hydrogen is grouped with the alkali metals because it ____.
does not readily form compounds
has one electron in its outer energy level
is a gas
is a metal
A chemical family whose members exist as reactive diatomic
molecules in the gaseous phase is the ____.
actinide series
alkali metals
halogens
lanthanide series
A chemical family whose members exist as reactive diatomic
molecules in the gaseous phase is the ____.
actinide series
alkali metals
halogens
lanthanide series
When hydrogen reacts with the active metals, it forms a chemical
bond by ____.
gaining one electron
losing one electrons
losing two electrons
sharing electrons
The elements in Groups 3 through 12 of the periodic table are the
____.
actinides
alkaline earth metals
transition elements
halogens
A family of elements that has two electrons in its outer energy level is
the ____.
actinides
alkaline earth metals
alkali metals
halogens
Metals can be used as wire because they are ____.
alloys
ductile
metallic
shiny
Elements in which the outer electrons are NOT held tightly are most
likely to form ____ bonds.
covalent
hydrogen
metallic
radioactive
Bromine is the only halogen and nonmetal that is normally a ____.
gas
liquid
semiconductor
solid
The only metal that is a liquid at room temperature is ____.
copper
mercury
silver
sodium
A synthetic element that is used in smoke detectors is ____.
aluminum
americium
sodium
technetium
All synthetic elements are ____.
liquids
needed by human body
radioactive
useful in making plastics
Cobalt, iron, and nickel are known as the ____ triad.
nickel
cobalt
iron
steel
Three transition elements in Group 12 of the periodic table are
____.
copper, silver, and gold
iron, nickel, and cobalt
mercury, zinc, and cadmium
neon, helium, and xenon
Any element with an atomic number greater than that of uranium is
a(n) ____.
halogen
lanthanide
transition element
transuranium element
The noble gases are in ____.
Group 18
Group 1
Group 13
Group 2
Elements that lie along the stair-step line of the periodic table are
____.
liquids
metals
metalloids
radioactive
The appearance of solid metals can be described as ____.
dull
glassy
powdery
shiny
A family of elements that contains the most reactive metals is the
____.
noble gases
alkaline earth metals
alkali metals
transition elements
Radioactive elements comprise a majority of the ____.
actinides
halogens
lanthanides
noble gases