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Chemistry Review Ch. 9-11
Test Description: Review
Instructions: Answer all questions to get your test result.
1) What is shared in a metallic bond ?
A
pooled valence electrons
B
protons
C
negatively charged ions
D
neutrons
2) What would make bromine, atomic number 17 , stable ?
A
gaining an electron
B
losing an electron
C
gaining 3 electrons
D
losing 2 electrons
3) Metals are good conductors because the ______ can move from ion to ion.
A
protons
B
electrons
C
valence electrons
D
neutrons
4) An ion is an atom that is no longer
A
positive
B
stable
C
negative
D
neutral
5) The symbol for Silver is
A
Ag
B
Si
C
Au
D
S
6) A molecule is a group of atoms held together by
A
covalent bonding
B
ionic bonding
C
gravity
D
pressure
7) Water is
A
unstable
B
a metalloid
C
an ionic molecule
D
a polar molecule
8) Which is NOT a Noble gas ?
A
Neon
B
Fluorine
C
Helium
D
Krypton
9) How many valence electrons does Lithium have ?
A
3
B
1
C
2
D
4
10) Which of these is NOT a compound ?
A
salt
B
carbon dioxide
C
water
D
air
11) Which is NOT an Alkali metal ?
A
magnesium
B
potassium
C
sodium
D
lithium
12) Isotopes are atoms of the same element with a different number of
A
protons
B
neutrons
C
electrons
D
quarks
13) Which statement about the nucleus is true ?
A
it has very little mass
B
it contains protons and electrons
C
it always has a negative charge
D
it always has a positive charge
14) The atomic mass of an element is the average of all known ______ of that element.
A
compounds
B
isotopes
C
radioactive forms
D
ions
15) Which is NOT true ?
A
neutrons have no electrical charge
B
different elements contain different numbers of protons
C
when a neutral atom gains an electron it becomes an isotope
D
protons and neutrons have the same mass
16) Which is NOT true about the Periodic table of the Elements ?
A
there are over 100 elements listed
B
the vertical rows are called columns
C
the horizontal rows are called periods
D
they are arranged alphabetically
17) Which element is NOT a metalloid?
A
iron
B
silicon
C
polonium
D
boron
18) Where are valence electrons found ?
A
in the electron level closest to the nucleus
B
in the nucleus
C
in the outermost electron level
19) __________ is a group of atoms held together by covalent bonding.
A
An ion
B
An isotope
C
A metalloid
D
A molecule
20) The atoms of a noble gas do not bond easily with other atoms because their valence electrons are
A
neutral
B
absent
C
stable
D
moving
*select an answer for all questions
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