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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
s
B
x
C
p
D
d
2) An electron jumps to a new energy leveel whan
A
the electron's location is pinpointed
B
the atoms gains or loses energy
C
the atoms becomes charged
D
the atoms becomes unstable
3) The number of energy levels filled in an atom is determined by
A
photons
B
protons
C
neutrons
D
electrrons
4) Which of the following statements is NOT true
A
A f orbital can hold up to three electrons
B
A s orbital holds 2 electrons
C
a p orbital can hold two electrons
D
A d orbital can hold up to 2 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 are made of protons,neutrons, and electrons
B
the nucleus is the center of the atom
C
atoms of different elements could join to form compounds
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 electrons and has a negative charge
D
the nucleus is made of protons and neutrons and has a positive charge
7) According to Rutherford's model of the atom,electron behave like
A
planets rotating on their axes
B
light energy in a vacuum
C
waves on a vibrating string
D
planets orbiting the sum
8) Oxygen's atomic number is 8. This means that an oxygen atom has
A
total of 8 neutron and electrons
B
8 protons in its nucleus
C
a total of 8 protons and neutrons
D
8 neutrons in the 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 a weighted average,so common isotopes have a greater effect that the uncommon ones
C
It is determined by counting the number of isotopes in a sample of the element
D
it is based on an isotope's charge, negative isotopes have a greater effect than positive ones
10) A mole is an SI unit bases the describes the
A
mass of a substance
B
electrical charge of a substance
C
volume of a substance
D
amount of a substance
*select an answer for all questions
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