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Samuels CHEM Atoms
Test Description: Atoms
Instructions: Answer all questions to get your test result.
1) This subatomic particle has a negative charge.
A
neutron
B
electron
C
proton
D
nucleon
2) This is the part of the atom where neutrons and protons are located.
A
orbitals
B
outer shell
C
valence shells
D
nucleus
3) What is used to determine the mass number of an element?
A
number of electrons + number of protons
B
number of electrons + number of neutrons
C
number of protons + number of neutrons
D
number of quarks + number of electrons
4) The atomic number on the periodic table represents the number of
A
neutrons
B
protons
C
electrons
D
nucleons
5) Which of the following is not part of the atomic theory of matter?
A
every element consists of tiny, indivisible, indestructible particles called atoms
B
different properties of elements result from differences in the atoms of the elements
C
all atoms of elements combined in compounds are combined in varying ratios
D
a chemical reaction is the result of rearrangement, combination or separation of atoms
6) Which of the following is 2 or more atoms linked by chemical bonds?
A
cell
B
element
C
molecule
D
ion
7) The smallest unit of matter into which elements can be broken down into
A
atom
B
molecule
C
compound
D
cell
8) This has no definite shape or volume
A
solid
B
gas
C
plasma
D
liquid
9) An atom that has gained an electron and therefore has a negative charge is a(n)
A
cation
B
isotope
C
anion
D
molecule
10) If two atoms have different numbers of neutrons, then they are called
A
isotopes
B
ions
C
charged atoms
D
molecules
*select an answer for all questions
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