Chemistry Final 2 Of 3 Question Preview (ID: 34379)


Chem Final Part 2. TEACHERS: click here for quick copy question ID numbers.

Who discovered the neutron?
a) Schrodinger
b) Bohr
c) Einstein
d) Chadwick

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 54
b) About 55
c) About 56
d) About 57

Discovered the charge and mass of the electron
a) Chadwick
b) Millikan
c) Dalton
d) Thomson

Developed the plum pudding model of an atom
a) Thomson
b) Dalton
c) Rutherford
d) Millikan

This element has 26 electrons, 29 neutrons, and 26 protons
a) Iron
b) Calcium
c) Helium
d) Lead

From the choices below which step would occur first?
a) Forming a hypothesis
b) making observations
c) creating experiments
d) drawing conclusions

A hypothesis...
a) Can be completely proven
b) is a possible answer to a question, tested through an experiment
c) does not have to be tested to be accepted as probably correct
d) a proven fact

A controlled experiment allows the scientist to test
a) a conclusion
b) a mass of information
c) several variables
d) one variable

The vertical columns in the periodic table are known as...
a) periods
b) groups
c)
d)

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) non-metal
c) metalloid
d) all of the above

The elements in Groups 1 and 2 are known respectively as
a) Alkali metals, Halogens
b) Halogens, Transition Metals
c) Halogens, Noble Gases
d) Alkali metals, Alkali Earth Metals

The order of elements in the periodic table is based on
a) the number of protons in the nucleus
b) the electric charge of the nucleus
c) the number of neutrons in the nucleus
d) atomic mass

Atoms of elements that are in the same group have the same number of
a) protons
b) neutrons
c) valence electrons
d) protons and neutrons

Which of the following elements is an alkali metal?
a) Calcium
b) Magnesium
c) Mercury
d) Sodium

Carbon and other nonmetals are found in which area of the periodic table?
a) left most side
b) right side
c) middle column
d) bottom rows

Magnesium is located to the right of sodium because Magnesium has
a) fewer protons
b) no neutrons
c) no protons
d) more protons

In Medeleev's periodic table, elements in each column had similar?
a) atomic masses
b) properties
c) atomic numbers
d) symbols

How was Mendeleev's periodic table arranged?
a) by increasing atomic mass
b) by decreasing atomic mass
c) by increasing atomic number
d) by decreasing atomic number

Mendeleev left gaps in his periodic table because
a) the table was too small
b) protons belonged there
c) the table was too full
d) no known elements fit there

Each column of the periodic table is
a) an element
b) a group
c) an isotope
d) a period

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