12 questions
What determines the order of elements on today's periodic table?
increasing atomic mass
decreasing atomic mass
increasing atomic number
decreasing atomic number
From this element key of Nitrogen, determine the atomic mass of nitrogen
7
7.01
14.01
21.01
Look at the periodic table. Which list of elements forms a group on the periodic table?
Li, Be, B, C, N, O, F, and Ne
He, Ne, Ar, Kr, Xe, and Rn
B, Si, As, Te, and At
Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Ni, and Zd
Which is NOT a property of metals?
brittleness
conductivity
ductility
luster
What are two properties that make a metal a good choice to use as wire in electronics?
conductivity, malleability
ductility, conductivity
luster, malleability
malleability, high density
Where are most metals on the periodic table?
on the left side only
on the right side only
in the middle only
on the left side and in the middle
Using the periodic table, which element is a metalloid?
carbon
silicon
oxygen
aluminum
Iodine is a nonmetal. What is one property of iodine?
conductivity
dull appearance
malleability
ductility
The table above lists some information about certain elements in group 17. Which statement describes what happens to these elements as atomic number increases?
Both melting point and boiling point decrease.
Melting point increases and boiling point decreases.
Melting point decreases and boiling point increases.
Both melting point and boiling point increase.
What is one similarity among elements in a group?
atomic mass
atomic weight
chemical properties
practical uses
Where are most nonmetals located on the periodic table?
in the bottom row
on the left side and in the middle
on the right side
in the top row
Which group of elements can act as semiconductors?
halogens
metalloids
metals
noble gases