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Chemistry Final 2 Of 3
Test Description: Chem final part 2
Instructions: Answer all questions to get your test result.
1) Who discovered the neutron?
A
Einstein
B
Chadwick
C
Schrodinger
D
Bohr
2) Iron has 3 isotopes. 5.84% is Fe-54, 91.68% is Fe-56 and .31% is Fe-58. Without any calculations what is the approximate atomic mass of iron?
A
About 55
B
About 57
C
About 56
D
About 54
3) Discovered the charge and mass of the electron
A
Chadwick
B
Dalton
C
Thomson
D
Millikan
4) Developed the plum pudding model of an atom
A
Rutherford
B
Dalton
C
Thomson
D
Millikan
5) This element has 26 electrons, 29 neutrons, and 26 protons
A
Iron
B
Calcium
C
Lead
D
Helium
6) From the choices below which step would occur first?
A
drawing conclusions
B
Forming a hypothesis
C
creating experiments
D
making observations
7) A hypothesis...
A
Can be completely proven
B
does not have to be tested to be accepted as probably correct
C
is a possible answer to a question, tested through an experiment
D
a proven fact
8) A controlled experiment allows the scientist to test
A
a conclusion
B
one variable
C
a mass of information
D
several variables
9) The vertical columns in the periodic table are known as...
A
groups
B
periods
10) Silicon is lustrous and is a conductor of heat and electricity, but is not malleable or ductile. For this reason, silicon is known to be a
A
metal
B
all of the above
C
non-metal
D
metalloid
11) The elements in Groups 1 and 2 are known respectively as
A
Alkali metals, Alkali Earth Metals
B
Alkali metals, Halogens
C
Halogens, Transition Metals
D
Halogens, Noble Gases
12) The order of elements in the periodic table is based on
A
the electric charge of the nucleus
B
the number of protons in the nucleus
C
the number of neutrons in the nucleus
D
atomic mass
13) Atoms of elements that are in the same group have the same number of
A
neutrons
B
protons and neutrons
C
valence electrons
D
protons
14) Which of the following elements is an alkali metal?
A
Sodium
B
Calcium
C
Mercury
D
Magnesium
15) Carbon and other nonmetals are found in which area of the periodic table?
A
middle column
B
bottom rows
C
left most side
D
right side
16) Magnesium is located to the right of sodium because Magnesium has
A
fewer protons
B
more protons
C
no protons
D
no neutrons
17) In Medeleev's periodic table, elements in each column had similar?
A
atomic masses
B
atomic numbers
C
properties
D
symbols
18) How was Mendeleev's periodic table arranged?
A
by increasing atomic mass
B
by increasing atomic number
C
by decreasing atomic number
D
by decreasing atomic mass
19) Mendeleev left gaps in his periodic table because
A
the table was too full
B
no known elements fit there
C
protons belonged there
D
the table was too small
20) Each column of the periodic table is
A
a period
B
a group
C
an element
D
an isotope
*select an answer for all questions
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