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