Chemistry test #1
if an atoms of barium gains 2 neutrons, what would be its new mass
139
how many negative subatomic particles travel around the nucleus in potassium (electrons)
19
how many positive subatomic particles are in the nucleus of potassium(protons)
19
How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?
36
what is the mass number of phosphorus if it were to gain 5 neutrons
36
what is the mass number of Zn-62
62
Manganese (III) combines with Chlorine. What is the product?
MnCl3
what is the ion formula for Zn if it loses 2 electrons
Zn +2
what is the name of Zn-62 if it gain 4 neutrons
Zn-66
What would phosphorous do with its valence electrons?
gain more
is the barium of 2e an isotope or an ion of barium
ion
Anything that has mass and takes up space is called
matter
An atom becomes _________ when it gains electrons.
negative
an atoms overall charge is
neutral
Particles in an atom that are neutral and have no charge are ______.
neutrons
What quantities vary between isotopes of an element?
neutrons and atomic mass
is phosphorus a metal, non-metal, or metalloid
non-metal
The central region of an atom where its neutrons and protons are is its _______.
nucleus
what uniquely identifies an element
number of protons
76 protons and 114 neutrons
osmium-190
an atom is electrically neutral when
protns and electrons are the same
the positive particles of an atom are
protons
A +2 ion will
subtract 2 electrons
Positive ions will try to achieve the configuration of
the noble gas behind itself
where are electrons of an atom found
electron cloud
what is the charge of a sodium ion
+1
if an element has 3 valence electrons, what charge will likely form on its ion
+3
what is the charge of an ion with 21 protons, 25 neutrons, and 28 electrons
+3
Group 7A always has ions with a charge of
-1
how many neutral subatomic particles are in the nucleus of potassium(neutrons)
20
Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant.
207
Nickel-59 has how many neutrons?
31
how many neutrons are in Zn-62
32
how many neutrons does the isotope 89 Kr have 36
53
An atom with atomic number 6 would have how many protons?
6
Aluminum combines with Oxygen. What is the product?
Al2O3
what is the only metalloid of Group 3A
B-boron
if an atom of barium loses 2 neutrons, what would be its isotope name
Ba-135
Calcium combines with Iodine. What is the product?
CaI2
Which element is the lightest halogen
F-fluorine
which metal is the heaviest alkali metal
Fr-francium
which element is a nonmetal but in the metal area of the table
H-hydrogen
which element is the last transition metal of period 6
Hg-mercury
which transition metal is a liquid at room temperature
Hg-mercury
which element is the last actinide
Lr-lawrencium
Which statement best describes an electron?
Smaller mass than a proton and a negative charge
Why are ions formed?
So the atom can achieve a stable state (usually an octet)
which element is an alkali earth metal of period 5
Sr-strontium
What is its name if zinc gains 3 protons
arsenic
Ions are:
atoms with a positive or negative charge
what is the name of the barium after losing 2 electrons
barium ion
Elements on the LEFT side of the periodic table will most likely form:
cations
Which of the following is a negatively charged subatomic particle?
electron
What happens when two oppositely charged ions are pushed together?
they attract
What happens when two negatively charged ions are pushed together?
they will repel
