Chemistry Unit Test Review
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  • Question 1
    60 seconds
    Q. Particles in an atom that are neutral and have NO charge are 
    answer choices
    negatrons 
    electrons 
    neutrons 
    protons 
  • Question 2
    30 seconds
    Q. The symbol for Carbon is
    answer choices
    6
    12.011
    C
    Ca
  • Question 3
    60 seconds
    Q. All matter is made of 
    answer choices
    energy 
    atoms 
    air
    chemistry
  • Question 4
    60 seconds
    Q. What is the smallest?
    answer choices
    worm
    molecule
    galaxy
    atom
  • Question 5
    60 seconds
    Q. What is the atomic number?
    answer choices
    the number of protons
    the number of protons and neutrons
    the number of neutrons
    the number of protons and electrons
  • Question 6
    60 seconds
    Q. What are the 3 subatomic particles that make-up the atom?
    answer choices
    protons, neutrons, and isotopes
    neutrons, isotopes, and electrons
    positives, negatives, and electrons
    protons, neutrons, and electrons
  • Question 7
    30 seconds
    Q. What does the nucleus of an atom contain?
    answer choices
    Electrons and neutrons
    Protons and neutrons
    Neutrinos and positrons
    DNA and RN
  • Question 8
    60 seconds
    Q. What is the atomic number?
    answer choices
    the number of protons
    the number of protons and neutrons
    the number of neutrons
    the number of protons and electrons
  • Question 9
    45 seconds
    Q. How many electrons does a neutral carbon atom have?
    answer choices
    0
    2
    14
    6
  • Question 10
    30 seconds
    Q. How many protons are in an atom of carbon?
    answer choices
    12.01
    8
    6
    14
  • Question 11
    60 seconds
    Q. What element is this?
    answer choices
    Lithium
    Boron
    Carbon
    Neon
  • Question 12
    45 seconds
    Q. What is at the center of every atom?
    answer choices
    An electron
    A compound
    A molecule
    A nucleus
  • Question 13
    45 seconds
    Q. In an atom, what is the number of protons equal to?
    answer choices
    The number of electrons.
    The number of neutrons.
    The number of molecules.
    The number of nuclei.
  • Question 14
    30 seconds
    Q. The particles with no charge in an atom are the _______.
    answer choices
    electrons
    neutrons
    protons
    protons and neutrons
  • Question 15
    30 seconds
    Q. The positively charged particles of an atom are the ________.
    answer choices
    electrons
    protons
    neutrons
    protons & neutrons
  • Question 16
    30 seconds
    Q. The negatively charged particles of an atom are the ______.
    answer choices
    electrons
    protons
    neutrons
    protons & neutrons
  • Question 17
    30 seconds
    Q. A particle that moves around the nucleus is a(n)...
    answer choices
    Proton
    Neutron
    Electron
    Quark
  • Question 18
    30 seconds
    Q. The center of an atom that holds protons and neutrons?
    answer choices
    model
    electron
    nucleus
    neutron
  • Question 19
    60 seconds
    Q. What number indicates an electron?
    answer choices
    1
    2
    3
    4
  • Question 20
    60 seconds
    Q. What number indicates the nucleus?
    answer choices
    1
    2
    3
    4
  • Question 21
    120 seconds
    Q. Which element has 31 protons ?
    answer choices
    Gallium 
    Germanium
    Gadolinium
    Polonium
  • Question 22
    45 seconds
    Q. What is the mass number?
    answer choices
    the number of protons
    the sum of the number of protons and the number of neutrons in the nucleus of an atom 
    the number of electrons
    the number of neutrons
  • Question 23
    60 seconds
    Q. Oxygen’s atomic number is 8. This means that an oxygen atom must have
    answer choices
    8 valence electrons
    8 protons
    8 neutrons
    a mass number of 8
  • Question 24
    45 seconds
    Q. If you want to know which atom an element is, then count the _____
    answer choices
    protons
    neutrons
    electrons
    nucleons
  • Question 25
    30 seconds
    Q. For an atom to be electrically neutral, it must contain the same number of _____
    answer choices
    protons and neutrons
    neutrons and electrons
    protons and electrons
    nucleons and electrons
  • Question 26
    60 seconds
    Q. If an atom contains exactly three protons, then it's an atom of _____
    answer choices
    lithium
    gold
    nitrogen
    carbon
  • Question 27
    45 seconds
    Q.

    number of neutrons = _____

    answer choices

    atomic number - mass number

    isotope number - atomic weight

    mass number - atomic weight

    atomic mass - atomic number

  • Question 28
    30 seconds
    Q. In the Bohr model of the atom, what is the maximum number of electrons in the first shell?
    answer choices
    1
    2
    6
    8
  • Question 29
    30 seconds
    Q. In the Bohr model of the atom, what is the maximum number of electrons in the second shell?
    answer choices
    2
    6
    8
    18
  • Question 30
    30 seconds
    Q.
    answer choices
    Periods
    Groups
  • Question 31
    30 seconds
    Q.
    answer choices
    Periods
    Groups
  • Question 32
    45 seconds
    Q.
    answer choices
    energy levels
    valence electrons
    protons
    neutrons
  • Question 33
    45 seconds
    Q.
    answer choices
    energy levels
    valence electrons
    protons
    neutrons
  • Question 34
    30 seconds
    Q.
    answer choices
    Same group
    Same period
  • Question 35
    30 seconds
    Q.
    answer choices
    Group 1
    Group 17
    Group 2
    Group 18
  • Question 36
    30 seconds
    Q.
    answer choices
    Group 1
    Group 17
    Group 18
    Group 2
  • Question 37
    30 seconds
    Q.
    answer choices
    Metals
    Nonmetals
    Metalloids
    noble gases
  • Question 38
    30 seconds
    Q.
    answer choices
    Metals
    Nonmetals
    Metalloids
    noble gases
  • Question 39
    30 seconds
    Q.
    answer choices
    Metals
    Nonmetals
    Metalloids
    noble gases
  • Question 40
    30 seconds
    Q.
    answer choices
    Metals
    Nonmetals
    Metalloids
    noble gases
  • Question 41
    30 seconds
    Q.
    answer choices
    Metals
    Nonmetals
    Metalloids
    noble gases
  • Question 42
    30 seconds
    Q.
    answer choices
    Metals
    Nonmetals
    Metalloids
    noble gases
  • Question 43
    30 seconds
    Q. mixtures
    answer choices
    Metals
    Nonmetals
    Metalloids
  • Question 44
    30 seconds
    Q. A vertical column is called...
    answer choices
    group
    tower
    period
    crew
  • Question 45
    30 seconds
    Q. The number at the bottom of each square on the periodic table is the ...
    answer choices
    atomic number
    atomic mass
    chemical symbol
    element name
  • Question 46
    30 seconds
    Q. What is the chemical symbol for Lithium?
    answer choices
    H
    He
    Li
    N
  • Question 47
    30 seconds
    Q. Most of the elements on the periodic table are classified as _____.
    answer choices
    Metals
    Nonmetals
    Metalloids
    Periods
  • Question 48
    30 seconds
    Q. This class of elements are sometimes called "semiconductors."
    answer choices
    Metals
    Nonmetals
    Metalloids
    Groups
  • Question 49
    45 seconds
    Q. What section is the least reactive? 
    answer choices
    yellow
    red
    dark blue
    orange
  • Question 50
    30 seconds
    Q. In what section would Transition Metals be found?
    answer choices
    orange
    light blue
    blue
    white
  • Question 51
    30 seconds
    Q. What are the first two elements on the periodic table?
    answer choices
    hydrogen and helium
    hydrogen and lithium
    hydrogen and carbon
    nitrogen and helium
  • Question 52
    30 seconds
    Q. Elements on the left side of the periodic table are 
    answer choices
    metals
    nonmetals
    metalloids
    noble gases
  • Question 53
    120 seconds
    Q. The atoms along the staircase are called 
    answer choices
    metals
    nonmetals
    metalloids
    noble gases
  • Question 54
    60 seconds
    Q. Which elements have the most similar chemical properties?
    answer choices
    K and Na
    K and Ca
    K and Cl
    K and S
  • Question 55
    30 seconds
    Q. Nonmetals are located in what section of this periodic table?
    answer choices
    Blue
    Yellow
    Pink
  • Question 56
    60 seconds
    Q. A ___________ is an arrangement of elements in columns
    answer choices
    columns
    rows
    periodic table
    electron shell
  • Question 57
    30 seconds
    Q. Which element is not a metal?
    answer choices
    H
    Re
    Al
    B
  • Question 58
    30 seconds
    Q. Elements in a ..................have similar chemical properties.  
    answer choices
    period
    group
    row
  • Question 59
    30 seconds
    Q. The simplest substance is..?
    answer choices
    Carbon
    An element
    Water
    A simple compound 
  • Question 60
    30 seconds
    Q. How many electrons does Oxygen need to fill its outer shell?
    answer choices
    3
    4
    1
    2
  • Question 61
    30 seconds
    Q. How many Valance electrons does Iodine Have?
    answer choices
    6
    16
    7
    17
  • Question 62
    30 seconds
    Q. The period for Bromine is ___________.
    answer choices
    3
    2
    4
  • Question 63
    30 seconds
    Q. Beryllium is in group number______.
    answer choices
    Group 2
    Group 3
    Group 4
    Group 7
  • Question 64
    30 seconds
    Q. The periodic table has __ periods.
    answer choices
    18
    8
    2
    7
  • Question 65
    30 seconds
    Q. An element's identity is determined by the number of
    answer choices
    electrons.
    protons.
    neutrons.
    valence.
  • Question 66
    30 seconds
    Q. Group 18 elements are known as the _____ _____ and have full valence shells.
    answer choices
    royal gases.
    supreme solids.
    noble gases.
    legit liquids.
  • Question 67
    60 seconds
    Q. Which elements have the most similar chemical properties?
    answer choices
    K and Na
    K and Ca
    K and Cl
    K and S
  • Question 68
    30 seconds
    Q. What period and group is Silver (Ag)? 
    answer choices
    Period 2, Group 1
    Period 3, Group 16
    Period 5, Group 11
    Period 2, 14
  • Question 69
    30 seconds
    Q. The elements in this group have 5 valence electrons and include elements N, P, and As.
    answer choices
    Group 5
    Group 1
    Group 18
    Group 15
  • Question 70
    30 seconds
    Q. The elements in this group only have 1 valence electron and include Li, Na, and K. 
    answer choices
    Group 11
    Group 1
    Group 3
  • Question 71
    30 seconds
    Q. Which of the following is not a property of metals?
    answer choices
    brittle
    malleable
    lustrous
    conductive
  • Question 72
    30 seconds
    Q. The periodic table has __ groups.
    answer choices
    8
    7
    18
    2
  • Question 73
    900 seconds
    Q. How many electrons do atoms need to be stable?
    answer choices
    1
    2
    6
    8
  • Question 74
    45 seconds
    Q. Sand and gravel may be separated from each other through using..
    answer choices
    a filter funnel
    a sieve
    an evaporating basin
    a distillation
  • Question 75
    45 seconds
    Q. Which one of the following techniques would best be used to separate soil and water?
    answer choices
    Decanting
    distillation
    Filtration
    Chromatography
  • Question 76
    45 seconds
    Q. Which one of the following solids is insoluble in water?
    answer choices
    sugar
    sand
    copper sulfate
    salt
  • Question 77
    45 seconds
    Q. Sodium chloride can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The separation then takes place in two stages:
    answer choices
    evaporation followed by filtration
     distillation followed by decanting
    filtration followed by evaporation
    filtration followed by decanting
  • Question 78
    45 seconds
    Q. Two or more substances mingled together, but not chemically combined are known as a
    answer choices
    residue
    solution
    distillate
    mixture
  • Question 79
    45 seconds
    Q. The separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known as
    answer choices
    decanting
     evaporation
    loading
    chromatography
  • Question 80
    45 seconds
    Q. In a coffee machine, the ground coffee is separated from the coffee solution by using..
    answer choices
    sand paper
     filter paper
    toilet paper
     tissue paper
  • Question 81
    45 seconds
    Q. Which one of the following would you use to separate sand from iron filings?
    answer choices
    a bar magnet
    filter paper
    chromatography paper
    alum
  • Question 82
    45 seconds
    Q. Which one of the following is NOT a mixture?
    answer choices
    Sugar
    Paint
    Crude oil
    Air
  • Question 83
    30 seconds
    Q. When different gases are mixed together to form air there is
    answer choices
    chemical reaction
    decomposition
    no physical reaction
    no chemical reaction
  • Question 84
    30 seconds
    Q. Iron fillings can be separated from iron and Sulphur mixture by
    answer choices
    sedementation
    heating
    magnetic attraction
    seiving
  • Question 85
    180 seconds
    Q. Water and Kool-Aid are mixed together. Hot water, coffee and sugar are mixed together. Which substance is the solvent in both?
    answer choices
    Water
    Coffee
    Kool-aid
    Sugar
  • Question 86
    180 seconds
    Q. All are solutes except
    answer choices
    sugar
    pepper
    salt
    powdered chocolate 
  • Question 87
    30 seconds
    Q. What is a substance that is dissolved in another substance? 
    answer choices
    solution
    solute
    solvent
    compound
  • Question 88
    30 seconds
    Q. To separate a mixture of salt and water what separation tool/method is used?
    answer choices
    Filter
    Screen
    Magnet
    Evaporation
  • Question 89
    30 seconds
    Q. If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?
    answer choices
    Filter
    Screen
    Magnet
    Evaporation
  • Question 90
    60 seconds
    Q. compounds are chemically bounded together 
    answer choices
    False
    true
    I don't know?
  • Question 91
    60 seconds
    Q. Can an element be broken down into a simpler substance 
    answer choices
    yes 
    No
  • Question 92
    60 seconds
    Q. Are there any compounds on the periodic table 
    answer choices
    yes there are many 
    no because only elements are on the periodic table
    I think they are?
  • Question 93
    30 seconds
    Q. Which one has more than one type of atom in it
    answer choices
    Element
    Compound 
  • Question 94
    30 seconds
    Q. which one only has one type of atom In it.
    answer choices
    Element
    compound
  • Question 95
    30 seconds
    Q. Is salt (NaCI) a compound or a element
    answer choices
    Compound
    element
  • Question 96
    30 seconds
    Q. which one can be found on the periodic table
    answer choices
    Compound 
    Element
  • Question 97
    60 seconds
    Q.
    answer choices
    1
    2
    3
    4
  • Question 98
    30 seconds
    Q.
    answer choices
    1
    2
    3
    4
  • Question 99
    120 seconds
    Q. How many elements are represented in the compound?
    Na2CO3
    answer choices
    1
    2
    3
    4
  • Question 100
    30 seconds
    Q. Which of the following an element?
    answer choices
    Carbonic Acid
    Copper
    Iron and Copper
    Water
  • Question 101
    60 seconds
    Q. What is made up two or more elements that are chemically combined?
    answer choices
    Element
    Mixture
    Compound
    Solids
  • Question 102
    30 seconds
    Q. How is a compound different from a mixture?
    answer choices
    Solids, liquids, and gases can form compounds
    Each substance in a compound loses its characteristic properties
  • Question 103
    30 seconds
    Q. A combination of substances that are not chemically combined is called a(n)____________. 
    answer choices
    mixture
    compound
    physical
  • Question 104
    30 seconds
    Q. Mixtures are separated through ___________changes.
    answer choices
    mixture
    compound
    physical
  • Question 105
    10 seconds
    Q. This picture represents which of the following?
    answer choices
    element
    compound
    mixture
  • Question 106
    30 seconds
    Q. This picture represents which of the following?
    answer choices
    element
    compound
    mixture
  • Question 107
    30 seconds
    Q. This picture represents which of the following?
    answer choices
    element
    compound
    mixture
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