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Quantum Mechanical Model of an atom

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PREDICTING THE
PROBABLE LOCATION OF
AN ELECTRON
REVIEW
1. This refers to the ultimate
indivisible particle of matter.
A. Atom
B. Compound
C. Element
D. Molecule
2. On the basis of Rutherford’s model
of an atom, which subatomic particle
is present in the nucleus of an atom?
A. proton and electron
B. proton and neutron
C. neutron and electron
D. proton only
3. It is a test performed to identify an
element in a compound based on the
color of light produced.
A. Boiling point test
B. Carbon dioxide test
C. Flame test
D. Carbon test
4. Which statement is incorrect?
A. Orbital is a region in an atom where an
electron can be found.
B. An electron can absorb energy when it
jumps to a higher energy level.
C. An electron can emit energy when it
jumps to a higher energy level.
D. Filling of electrons in an atom start from
lower energy level to highest energy level.
5. What occur when an electron
moves from high energy level to a low
one?
A. another electron goes from a low
energy level to a high one
B. the atom moves faster
C. colored light is given off
D. this process is not possible
6. Which of the following is NOT true about
the sub-atomic particles of atom?
A. The nucleus is the central part.
B. The proton and electrons are found inside
the nucleus.
C. The electron is a negatively charge
particle.
D. The proton has positive charge.
7. The state or condition when atom
released energy in a form of color
after absorbing heat.
A. Excited State
B. Ground State
C. Liquid State
D. Evaporation State
8.When an electron falls back to
its original energy level, it
A. EMITS ENERGY.
B. ABSORBS ENERGY.
C. TRANSFERS ENERGY.
D. STORES ENERGY.
9. The symbol “n” in the Bohr theory of
atomic structure refers to
A. the energy of electron
B. the total energy of the atom
C. the number of electron in an energy
level
D. the orbit in which an electron is
found.
10. Which of the following statements is NOT
true of the atomic model of Bohr?
A. The hydrogen is made up of a positively
charged nucleus.
B. The electron revolves around the nucleus in
a circular orbit.
C. The energy of the electron in a given orbit is
not fixed.
D. An electron can absorb or emit a quantity of
radiation.
Activity 3:
PREDICTING THE
PROBABLE LOCATION
OF AN ELECTRON
It
is
not
possible
to
Electrons are found
know
the
exact
in definite orbits
position
of
the
around the nucleus
electrons
Erwin
Louie
de
Karl
There is only Schrodinger
a probabilityWerner
that the
Broglie
Heisenberg
- Math
equation
electron
can
be
found
in
certain
- electron as a
- Uncertainty
for hydrogen
volume
the
nucleus.
wave in space around
Principle
atom
Volume or region of
space around the nucleus
where the electron is
most likely be found
- Views an electron as a
cloud of negative charge
having a certain
geometrical shapes
Electron
Configurations
OBJECTIVE
1. Write the electron
configuration of the
elements in the third
period
3. Tape the paper on the floor so
that it will not move.
4. Stand on the opposite side of the
target from your partner. Hold a pencil
or marker at chest level above the
center of the circles you have drawn.
5. Take turns dropping the pencil or
marker so that it will leave 100 dots
on the circles drawn on paper or
folder.
6. Count the number of dots in each
circle and record that number on the
data table.
7. Calculate the number of dots
per square centimeter (cm2).
8. Using a graphing paper, plot the
average distance from the center on
the x-axis and number of dots per
sq.cm on the y-axis.
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