Elements
What element has an atomic number of 16?
sulfur
Atoms are made of the following three subatomic particles:
protons, neutrons and electrons
Most atoms of the element oxygen have:
____ protons, ____ neutrons, ____ electrons
Oxygen is a (metal, nonmetal or metalloid).
Most oxygen atoms have:
8 protons, 8 neutrons, 8 electrons
Oxygen is a nonmetal.
The Periodic Table of the Elements is arranged according to increasing _____________________.
atomic number
How many electrons would a lithium (Li+) ion have?
2 electrons
What element has an atomic mass of 24.305?
magnesium
The charges of the three subatomic particles are:
protons (+)
neutrons (0)
electrons (-)
Most atoms of the element boron have:
____ protons, ____ neutrons, ____ electrons
Boron is a (metal, nonmetal or metalloid).
Most boron atoms have:
5 protons, 6 neutrons, 5 electrons
Boron is a metalloid.
The columns of the periodic table are called ______________.
groups
How many electrons would an aluminum (Al+3) ion have?
10 electrons
The element _____________________ is found in group 2 and 6 period.
barium
The masses of the three subatomic particles (in atomic mass units - amus) are:
protons - 1 amu
neutrons - 1 amu
electrons - 0 amu
Most atoms of the element zinc have:
____ protons, ____ neutrons, ____ electrons
Zinc is a (metal, nonmetal or metalloid).
Most zinc atoms have:
30 protons, 35 neutrons, 30 electrons
Zinc is a metal.
The rows of the periodic table are called _________________.
periods
How many electrons would a chlorine (Cl-1) ion have?
18 electrons
The element __________________ is found in group 14 and period 4.
germanium
The locations of the three subatomic particles in an atom are:
protons - in the nucleus
neutrons - in the nucleus
electrons - outside the nucleus, in the electron cloud
Most atoms of the element iron have:
____ protons, ____ neutrons, ____ electrons
Iron is a (metal, nonmetal or metalloid).
Most iron atoms have:
26 protons, 30 neutrons, 26 electrons
Iron is a metal.
Most of the elements of the Periodic Table of the Elements are _______________. Name three types of these found on the Periodic Table of the Elements.
Name any three.
Metals - alkali metals, alkaline earth metals, transition metals and inner transition metals (which include the lanthanide and actinide series of metals)
How many electrons would a phosphorus (P-3) ion have?
18 electrons
Name three elements that are metalloids.
Any three of the following elements:
boron, silicon, germanium, arsenic, antimony, tellurium, polonium
The three subatomic particles in an atom arranged in increasing order by mass are:
1) electrons - 0 amu
2) protons - 1 amu
3) neutrons - 1 amu (actually very slightly more)
Most atoms of the element hydrogen have:
____ protons, ____ neutrons, ____ electrons
Hydrogen is a (metal, nonmetal or metalloid).
Most hydrogen atoms have:
1 protons, 0 neutrons, 1 electrons
Hydrogen is a nonmetal.
Which elements on the Periodic Table of the Elements are the most stable?
The noble gases.
Metals _____________ electrons to become ___________ charged ions; while nonmetals _____________ electrons to become ___________ charged ions.
Metals lose electrons to become positively charged ions; while nonmetals gain electrons to become negatively charged ions.