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Ch 6 Structure Of Matter
Test Description: Physical science
Instructions: Answer all questions to get your test result.
1) a compound differs from a mixture because it
A
can form only in the presence of heat energy
B
is held together by chemical bonds
C
is formed by two cations
D
always remain frozen even at high temperatures
2) Which compound is formed from a tight network of oppositely charged ions
A
sugar (C12H22O11)
B
salt (NaCl)
C
water (H2O)
D
quartz (SiO2)
3) Often atoms join so that each atom will have
A
an outermost energy level that is full of electrons
B
more electrons than either protons or neutrons
C
an equal number of protons and electrons
D
an even number of electrons
4) When 2 hydrogen atoms bond, the positive nucleus of one atom attracts the
A
positive nucleus of the other atom
B
negative electron of the other atom
C
positive electrons of the other atom
D
negative nucleus of the other atom
5) An ionic bond is a bond that forms between
A
one atom's nucleus and another atom's electrons
B
ions with opposite charges
C
the electrons of two different atoms
D
atoms with neutral charges
6) In which type of bond do atoms share electrons
A
polyatomic bonds
B
ionic bonds
C
metallic bonds
D
covalent bonds
7) the anion formed from an oxygen atom is called
A
oxide ion
B
nitrous oxide
C
carbon dioxide
D
oxygen ion
8) Fe2O3 is named iron (III) because it contains
A
Fe 3+ ions
B
O 3+ ions
C
three iron atoms
D
three oxygen atoms
9) a carbon atom can bond to four other atoms because it has
A
four different cations
B
no protons in its nucleus
C
two inner energy levels
D
four valence electrons
10) which compounds hjave carbon-carbon double bonds
A
alkanes
B
alkenes
C
ionic compounds
D
alcohols
*select an answer for all questions
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