Chem Study Guide Exam
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| The branch of Chemistry concerned with the identification and compisition of materials. | Analyical
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| Carried out for the sake of increasing knowledge. | Basic Research
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| These properties include changes that alter the identity of a substance. | Chemical Properties
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| Carried out to solve a problem. | Applied research
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| Particles in a solid state are? | packed closely together
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| State of matter in which material has neither a definite shape nor definite volume | Gaseous State
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| Elements that border the zig-zag line in the period table. | Metalloids
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| A vertical column of blocks on the periodic table. | Group
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| Elements in a group can be expected to have similar | properties
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| In what state does the material has a definite volume but no definite state | liquid state
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| A testable statement used for making predictions and carrying further experiments | Hypothesis
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| Symbol for metric unit used to measure mass | Gram
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| The symbol that represents the measured unit for volume | mL
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| SI unit for time | Second
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| A change in the earth's gravity on an object will affect its? | weight
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| to calculate an objects density you divide its mass by is? | volume
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| Number of significant digits in the measurement 210cm is | two
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| The graph of a direct proportion is a | straight line
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| The SI standards for lenght and mass | meter kilogram
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| Number of significant digitd in 170.040 | six
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| School master who studied chemistry and proposed an atomic theory | John Dalton
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| DIscovered the nucleus by bombarding gold foil with positivly charged particles | Rutherford
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| Smallest unit of an element that can exist alone or in combination with other such particles? | atom
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| Nickel-60 has ____ neutrons | 32
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| Aluminium has an atomic number of | 13
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| Which of the following proceses always decreases the number of protons by an even number | alpha decay
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| What unit measures radiation damage to human tissue | rem
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| Who called the 'atom' the atom | Democritus
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| What unit measures radiation | roentgen
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| In a glass tube, electrical current passes from the negative electrode, called the _____ to the other electrode. | cathode
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| As it travels through space , electromagnetic radiation exibits what type of behavior | wavelike
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| The distance between two successive peaks on a wave | wavelength
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| A quantum of electromagnetic energy | photon
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| Main energy level that can hold only two electrons | first
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| The atomic sublevel with the next highest energy after 4p | 5s
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| An element with eight electrons in its highest energy level | noble gas
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| Which group is halogens | 17
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| How many periods are on the periodic table | 7
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| How many groups are on the periodic table | 18
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| The statement that electron occupies the lowest avalible energy orbital | Aufbau Principle
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| Elements with atomic numbers 58-71 in the periodic table | lanthanide
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| Argon, krypton, and xenon are | noble gases
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| Person whose work led to a periodic table based on increasing atomic number | Moseley
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| Mendeleev attempted to organize the chemical elements based on there | properties
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| Period 4 contains 18 elements. How many of these elements are in the d sublevel | 10
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| Elements in the d sublevel have properties of | metals
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| Measure of the ability of an atom in a chemical compuond to attract electrons is an atom's | electronegativity
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| Postive ion | cation
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| Negative ion | anion
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| The most characteristic property of the noble gases | largely unreactive
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| An octet is equal to | 8
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| The chemical bond formed when two atoms share electrons | covalent bond
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| If two covalently bonded atoms are identical the bond is | nonpolar covalent
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| Most _______ _________ are partly ionic and partly covalent | chemical bonds
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| The electrons involved in the formation of a chemical bond | valence
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| Atoms are _____ stable when they are combined | more
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| The electron- sea model bonding represents | metallic bonding
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| If a mateial can be shaped or xtended by physical pressure, such as hammering, which property does the material have? | mallealbility
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| In drawing a Lewis structure, each nonmetal atom except hydrongen should be surrounded by how many electrons | 8
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| Compared to ionic compounds, molecular compounds have _______ melting points | lower
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