NAME :
CLASS :
Atoms: The Building Blocks of Matter
DATE :
39 Questions
1.
2.
Can matter be created or destroyed?
a) Yes, it can be created.
b) Yes, it can be destroyed.
c) No, matter is always conserved
d) None of these
What is the law of conservation of mass?
a) The part of the universe being studied
b) The rest of the universe that interacts with
the system
c) Mass is not created nor destroyed, only
d) A system that freely exchanges matter and
can be rearranged.
3.
4.
energy
What is the law of conservation of mass?
a) Matter changes when reacted or changed.
b) The mass of all reactants are changed
during a physical or chemical change
c) The mass of the reactants is the same as
the mass of the products
d) The mass of the products is different than
the mass of the reactants.
Ernst Rutherford discovered which part of the atom
through the use of gold foil?
a) Proton
b) Neutron
c) Electron
d) Orbitals
5.
J.J. Thompson discovered the ____________. His model is
called the plum pudding model which we sometimes call
the chocolate chip model.
a) proton
b) electron
c) neutron
d) nucleus
6.
The experiment used by Ernest Rutherford to discover the
nucleus of an atom.
a) Cathode Ray Experiment
b) Gold Foil Experiment
c) Reflector Experiment
d) Plum Pudding Experiment
7.
Subatomic particle that has a negative charge and is
located outside of the nucleus.
a) Electron
b) Proton
c) Neutron
d) Voltron
8.
What was INCORRECT about John Dalton's theory about
atoms?
9.
a) All matter is made of atoms
b) Atoms have no parts
c) Atoms are too small to see
d) Atoms of a given element are identical
What subatomic particle changes the identity of the atom?
a) Neutron
b) Proton
c) Voltron
d) Electron
10.
What is the tiny, massive central part of the atom?
a) Neutron
b) Electron
c) Proton
d) Nucleus
11.
Who discovered the nucleus of an atom?
a) JJ Thomson
b) Ernest Rutherford
c) John Dalton
d) Democritus
12.
Who proposed the idea that atoms of the same element
are the same and atoms of different elements are
different?
a) Dalton
b) Bohr
c) Rutherford
d) Thomson
13.
What did the Cathode Ray Tube Experiment add to the
atomic theory?
a) subatomic particles, specifically electrons
b) small dense positively charged nucleus
c) neutrons
d) protons
14.
Whose model is most similar to the solar system?
a) Bohr
b) Thomson
c) Rutherford
d) Dalton
15.
16.
17.
18.
Which of the following was NOT part of Dalton's theory?
a) all atoms are the same shape and size
b) atoms of the same element are the same
and atoms of different elements are
different
c) atoms can not be divided
d) atoms combine in definite ratios to form
compounds
What does the number 37 represent in Chlorine-37?
a) Atomic number
b) Mass number
c) Number of protons
d) Number of neutrons
# neutrons + # protons = ___
a) Atomic number
b) Atomic Mass
c) Mass Number
d) Valence Electrons
Location of a neutron
a) Inside the nucleus
b) Outside the nucleus
c) Electron Cloud
d) Energy Level
19.
20.
21.
22.
23.
Location of the proton
a) Nucleus
b) Outside the nucleus
c) Electron cloud
d) Energy level
Components of atoms
a) quarks
b) isotpoes
c) subatomic particles
d) ions
Subatomic particle that determines the identity of the atom
a) proton
b) nucleus
c) electron
d) neutron
Tells the number of protons of an atom
a) atomic theory
b) atomic identity
c) atomic mass
d) atomic number
An atom has 10 protons and a mass of 18. It has __
neutrons
a) 10
b) 18
c) 28
d) 8
24.
How many protons does this isotope of titanium have?
a) 48
b) 22
c) 26
d) 70
25.
26.
How many neutrons does the isotope of lithium have?
a) 8
b) 3
c) 4
d) 5
How many neutrons does uranium-235 have?
a) 238
b) 92
c) 146
d) 143
27.
In a correctly written symbol what would be located in the
"A" position?
a) number of neutrons
b) atomic number
c) number of electrons
d) mass number
28.
29.
Calculate the average atomic mass of silver.
a) 106.38649amu
b) 111.91896amu
c) 107.8677amu
d) 121
Calculate the average atomic mass of element X when 34%
of element X exists as X-272 and the remainder exists as X274.
a) 185.64amu
b) 273.32amu
c) 272.68amu
d) 27.33amu
30.
which atom has 4 neutrons?
a) Li-6
b) Li-7
c) Li-8
d) they have the same # of neutrons
31.
32.
33.
34.
35.
36.
What quantities vary between isotopes of an element?
a) protons, electrons, and atomic mass
b) protons, electrons, and atomic number
c) neutrons and electrons
d) neutrons and mass number
How many moles is 4 grams of Calcium?
a) 0.10 moles
b) 10 moles
c) 44 moles
d) 160 moles
How many grams is 1.2 moles of Neon?
a) 0.05 grams
b) 16.6 grams
c) 21.2 grams
d) 24 grams
How many moles are in 6x1022 particles of CO ?
2
a) 0.1 moles
b) 4.4 moles
c) 10 moles
d) 264 moles
How many particles are in 13.5 grams of Beryllium?
a) 1.5 particles
b) 9 particles
c) 4x1023 particles
d) 9x1023 particles
What is the mass of 4.20 mol of the element iron (Fe)?
a) 235g Fe
b) 55.8g Fe
c) 134g Fe
d) 6.02x1023g Fe
37.
38.
39.
How many moles are in 19.82 g Mg?
a) 1.226mol Mg
b) 481.7mol Mg
c) 1.000mol Mg
d) 0.8156 mol Mg
How many atoms are in 6.3 mol Zn?
a) 6.0x1023atoms Zn
b) 3.8x1024atoms Zn
c) 1.0x10-23atoms Zn
d) 410atoms Zn
What is the mass of 3.01x1024atoms of Ca?
a) 200.g Ca
b) 40.1g Ca
c) 8.01g Ca
d) 20.0g Ca
Answer Key
1.
2.
3.
4.
c
c
c
a
5.
6.
7.
8.
9.
b
b
a
b
b
10.
11.
12.
13.
14.
d
b
a
a
a
15.
16.
17.
18.
19.
a
b
c
a
a
20.
21.
22.
23.
24.
c
a
d
d
b
25.
26.
27.
28.
29.
d
d
d
c
b
30.
31.
32.
33.
34.
b
d
a
d
a
35.
36.
37.
d
a
d
38.
b
38.
39.
b
a