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WorksheetsReview for Final Exam A
Total questions: 36
Worksheet time: 1hrs 29mins
Most of the elements on the periodic table are classified as
gases
liquids
metals
nonmetals
The amount of time it takes for half a radioactive sample to decay is known as
decay series
radioactive decay
half life
permutation
Iodine-131 is a radioactive isotopes used
to treat thyroid cancer
in light
a smoke detector
nuclear bombs
What is an alpha particle?
least penetrating radiation
:
Helium nucleus
most penetration radiation
:
gamma ray
middle penetrating
:
electron
no penetration
:
positron
Which radioactive particle has the least mass?
alpha particle
helium nucleusq
beta particle
neutrino
The nucleus of K - 44 contains
19 protons and 23 neutrons
19 protons and 25 neutrons
20 protons and 19 neutrons
44 protons and 19 neutrons
Carbon-14 is a radioactive isotopes used in
treating tumors
cancer treatment
dating fossils
smoke detectors
The average of an element with the following isotopes is ? 40.0g and 42% abundance and 44 g and 58% abundance
42.32g/mol
4232g
41.68g
4.42g
The radioactive isotopes H-3 is used in
nuclear reactors
treating thyroid tumors
smoke detectors
dating fossils
Which list places elements in order of increasing mass?
Al, B, He, H
H, He, B, Al
Lu, Yb, Tm, Er
Rb, K, Na, Li
Which group doesn't bond well with other atoms?
alkali metals
transition metals
halogens
noble gases
Noble gases tend not to bond with other atoms due to a
full outer shell of electrons (8)
full middle shell(8)
full inner shell(8)
Find the mass of an atom with 23 protons, 23 electrons and 28 neutrons?
24.6 amu
74 amu
46 amu
51 amu
Which of the following is NOT a correct definition for isotope?
An atom that has an uncommon number of neutrons
An atom that has more or less mass than what's listed on the Periodic Table
An atom with an unstable nucleus
An atom that has too many electrons
During a science project, Harper and Benjamin were discussing a nuclear equation. What type of nuclear equation were they discussing?
fusion
fission
alpha
beta
Elijah, David, and Kai are studying nuclear physics. They come across some symbols in their textbook. Elijah thinks they represent an alpha particle. What do you think these symbols represent?
alpha particle
beta particle
neutron
gamma ray
Rohan is studying nuclear reactions and comes across the following equation that needs to be balanced:
146C --> 0-1e + ________
145B
146C
147N
42He
Evelyn is studying nuclear reactions and comes across a decay process. She needs to complete the nuclear equation and determine the type of decay that is occurring in this reaction. What type of decay is it?
alpha
beta
gamma
none
This isotope has:
(a) protons
8 electrons
(b) neutrons
mass number of (c)
carbon-14
lithium-7
phosphorus-30
An atom of Aluminum-27 has:
(a) protons
(b) neutrons
a mass number of (c)
Write the hyphen notation for the element that has 1 proton and 0 neutrons:
(a)
Write the hyphen notation for the element that has 9 protons and 10 neutrons:
(a)
An element has three different isotopes. One has a mass of 35.00 u; another has a mass of 36.00 u; and another has a mass of 38.00 u. What is the average atomic mass of this element?
24.1% of all the isotopes of an element have a mass of 75.23 u, 48.7% have a mass of 74.61 u, and 27.2% have a mass of 75.20 u.
What is the average atomic mass of this element?
74.92 u
24.97 u
75.01 u
74.51 u
Who was the first contributor to the atomic theory?
John Dalton
Ernest Rutherford
JJ Thompson
Democritus
Neils Bohr
What were J. J. Thomson's three contributions to the atomic theory?
Discovered the electron
Discovered the nucleus -did the gold foil experiment
Used the cathode ray tube in his discovery
Created a model of the atom with electrons moving around the nucleus in fixed orbits
Created the "plum pudding" model of the atom
What is Neils Bohr's contribution to the atomic theory?
Created the atomic theory
Created a model of the atom with electrons moving around the nucleus in a fixed orbits
Discovered that the proton had a positive charge
Believed that atoms of a given element are identical
Discovered the electron
What were Ernest Rutherford's three contributions to atomic theory?
Discovered that the atom is mostly empty space
Discovered the nucleus- did the gold foil experiment
Used the cathode ray tube in his discovery
Discovered the electron
Discovered that the proton had a positive charge
What are the seven diatomic elements?
H2, Cl2, Br2, O2, N2, I2, F2
H2, Cl2, I2, F2, Hg2, Br2, Fe2
H2, Cu2, Ni2, B2, O2, I2, Fe2
What are diatomic elements?
Elements that form two-atom molecules when not combined in a compound.
Two elements that combine with one atom from each element.
Elements that are always in pairs no matter what.
Is K2 a diatomic element?
Yes
No
