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Exam Review 3
Test Description: The following questions review a variety of topics that will be covered on your final exam.
Instructions: Answer all questions to get your test result.
1) If rust is scraped off a nail, and the nail is shiny on the inside, the inside was
A
not chemically changed.
B
physically and chemically changed.
C
neither physically nor chemically changed.
D
chemically changed also.
2) Which of these observations is NOT an example of a physical property of matter?
A
Your mother's best silver tarnishes.
B
There are usually at least three different minerals in a piece of granite.
C
Gold melts at 1064 ÂșC.
D
The density of sea water is measured to be 1.027 g/cm3.
3) A(n) ______________________________ is the smallest complete part of an element that still has all the properties of that element.
A
neutron
B
atom
C
electron
D
proton
4) Most of the mass of an atom can be found in the
A
atomic zone
B
electron shell
C
nucleus
D
electron cloud
5) Which of these particles are equal in number when an atom is neutral?
A
an atom cannot be neutral
B
electrons and neutrons
C
protons and electrons
D
neutrons and protons
6) The particle that determines the identity of an element is the
A
photon
B
proton
C
electron
D
neutron
7) Without electrons, atoms would carry a _______________ charge.
A
alternating
B
positive
C
neutral
D
negative
8) What is the maximum number of electrons that can exist in the first shell surrounding an atomic nucleus?
A
2
B
4
C
6
D
8
9) ____________________________________ may be shared by or transferred to other atoms.
A
photon
B
protons
C
neutrons
D
electrons
10) An isotope shares the atomic number with its element atom. How does it differ from the element atom?
A
The isotope has additional or fewer protons.
B
The isotope has additional or few neutrons.
C
The isotope has additional or fewer electrons.
D
The isotope has fewer electron shells.
*select an answer for all questions
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