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Atoms, Elements & the Periodic Table Review
Matter made of only one kind of atom
Tuna salad is an example of a
Atoms, Elements & the Periodic Table Review
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1
Tuna salad is an example of a
homogeneous mixture
element
compound
heterogeneous mixture
2
Matter made of only one kind of atom
compound
mixture
isotope
element
3
Law of Conservation of Matter says
matter changes forms
matter cannot be destroyed
all of these
matter cannot be created
4
Best conductors of heat & electricity
nonmetals
none of these
metalloids
metals
5
Isotopes of an element contain different numbers of
protons
energy levels
neutrons
electrons
6
C
12
H
22
O
11
is
a mixture
an element
a compound
an isotope
7
The periodic table block for a given element shows its
all of these
symbol
atomic number
atomic mass
8
Matter that is NOT considered to be a single substance is
a mixture
an element
an isotope
a compound
9
The area in an atom where the negatively charged particles can be found, arranged in energy levels
neutron
electron cloud
nucleus
cell
10
The particles that make up atoms include
electrons
all of these
protons
neutrons
11
Which of the following is NOT always equal to the other three things in a neutral atom?
neutrons
atomic number
protons
electrons
12
C
12
H
22
O
11
is made up of
3 different elements
45 different elements
13
An atom of titanium has 22 protons & 26 neutrons. What is its mass number?
22
26
4
48
14
The atomic number of an element tells the number of ________ in the nucleus of an atom of that element.
protons
electrons
neutrons
all of these
15
The smallest particle that makes up most types of matter
compound
atom
nucleus
cell
16
Beryllium's atomic number is 4 and its mass number is 9. How many protons does an atom of beryllium contain?
9
5
13
4
17
Rubbing alcohol's chemical formula is C
3
H
8
O. How many atoms are contained in a molecule of rubbing alcohol?
12
3
11
25
18
The oxygen we breathe is O
2,
whereas the oxygen that makes up the ozone layer is O
3.
Which of the following is FALSE?
Both are compounds.
Both are molecules.
They are made up of different numbers of atoms.
They are made up of the same element.
19
The total number of protons plus neutrons is equal to the
mass number
number of electrons
atomic number
number of energy levels
20
Which is NOT true about a family on the periodic table?
they are also called groups
the atomic number increases by one as you go down a family
they are the vertical columns
elements in the same family have similar structural properties
21
The sub-atomic particles that have a positive charge are
all of these
neutrons
electrons
protons
22
Which of the following is the correct way to write the symbol for the element magnesium?
MG
mg
Mg
all of these
23
Beryllium's atomic number is 4 and its mass number is 9. How many neutrons does an atom of beryllium contain?
9
4
13
5
24
Inside the nucleus are
all of these
electrons & neutrons
protons & electrons
protons & neutrons
25
Beryllium's atomic number is 4 and its mass number is 9. How many electrons does an atom of beryllium contain?
9
13
4
5
26
Anything that has mass & takes up space
gravity
matter
molecule
volume
27
Hydrogen peroxide is made up of 2 atoms of hydrogen & 2 atoms of oxygen. It is an example of
a homogeneous mixture
a heterogeneous mixture
a compound
an element
28
The central part of the atom, which makes up most of the mass of an atom is the
nucleus
isotope
electron cloud
all of these
29
The sub-atomic particles that have a negative charge are
electrons
all of these
neutrons
protons
30
The sub-atomic particles that are neutral, or have no charge
electrons
protons
neutrons
all of these
31
A property associated with metals is
brittleness
poor electrical conductor
dullness
malleability
32
C
12
H
22
O
11
is made up of
45 atoms
3 atoms
33
An atom of titanium has 22 protons & 26 neutrons. How many electrons does it have?
26
4
48
22
34
Ammonia contains three atoms of hydrogen for every atom of nitrogen. What is its chemical formula?
NH3
N3H3
3NH
N3H
35
Which is NOT true of the periods on the periodic table?
they are the horizontal rows
they are the vertical columns
elements in the same period have the same number of electron energy levels
the atomic number increases by one as you go across the period
36
An atom of titanium has 22 protons & 26 neutrons. What is its atomic number?
26
22
48
4
37
What identifies & tells how many atoms of each element are contained in a compound?
electron cloud
chemical formula
subatomic particles
element symbol
38
Two or more atoms bonded together, making them the smallest unit of a chemical compound
molecule
atom
element
proton
