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Ps Ch 4
Test Description: Atom
Instructions: Answer all questions to get your test result.
1) Which of the following is NOT a type of orbital
A
p
B
x
C
s
D
d
2) An electron jumps to a new energy leveel whan
A
the electron's location is pinpointed
B
the atoms becomes unstable
C
the atoms gains or loses energy
D
the atoms becomes charged
3) The number of energy levels filled in an atom is determined by
A
photons
B
electrrons
C
protons
D
neutrons
4) Which of the following statements is NOT true
A
A f orbital can hold up to three electrons
B
A d orbital can hold up to 2 electrons
C
A s orbital holds 2 electrons
D
a p orbital can hold two electrons
5) Dalton's atomic theory stated that every element was made of atoms that could not be sub divided, atoms of the same element are alike, and
A
atoms of different elements could join to form compounds
B
the nucleus is the center of the atom
C
atoms are made of protons,neutrons, and electrons
D
atoms are constantly in motion
6) Which statement about the atom's nucleus is correct
A
the nucleus is made of protons and neutrons and has a negative charge
B
the nucleus is made of electrons and has a positive charge
C
the nucleus is made of protons and neutrons and has a positive charge
D
the nucleus is made of electrons and has a negative charge
7) According to Rutherford's model of the atom,electron behave like
A
waves on a vibrating string
B
planets rotating on their axes
C
planets orbiting the sum
D
light energy in a vacuum
8) Oxygen's atomic number is 8. This means that an oxygen atom has
A
total of 8 neutron and electrons
B
8 neutrons in the nucleus
C
a total of 8 protons and neutrons
D
8 protons in its nucleus
9) Which statement about an element's average atomic mass is correct
A
it is equal to one twelfth the mass of the most common isotope
B
it is based on an isotope's charge, negative isotopes have a greater effect than positive ones
C
it is a weighted average,so common isotopes have a greater effect that the uncommon ones
D
It is determined by counting the number of isotopes in a sample of the element
10) A mole is an SI unit bases the describes the
A
mass of a substance
B
amount of a substance
C
volume of a substance
D
electrical charge of a substance
*select an answer for all questions
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