chemistry 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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| which of the following is not an example of a molecular formula | B
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| the electrons involved in the formation of a chemical bond are called | valence electrons
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| most chemical bonds are | partly ionic and partly covalent
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| a covalent bond results when what are shared | electrons
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| an octet is equal to | 8
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| when atoms share electrons, the electrical attraction of an atom for the electrons is called the atom's what | electronegativity
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| the elements of what group satisfy the octet rule | noble gas
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| to draw a lewis structure, on must know the | number of valence electrons in each atom
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| a compound that vaporizes readily at room temp. is most likely to be a | molecular compound
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| malleability and ductility are characteristics of substances with | mettalic bonds
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| to which group do lithium and potassium belong | alkali metals
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| mendeleev attempted to organize the chemical elements based on their | properties
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| argon, krypton, and xenon are | noble gases
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| to which group do flourine and chlorine belong | halogens
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| a horizontal row of blocks in the periodic table is called a | period
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| a positive ion is known as a | cation
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| a negative ion is known as an | anion
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| the most reactive group of the nonmetals are the | halogens
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| valence electrons are those | in the highest energy level
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| in a row in the periodic table, as the atomic number increases, the atomic radius | decreases
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| as it travels through space, electromagnetic radiation | exhibits wavelike behavior
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| the distance between two successive peaks on a wave is its | wavelength
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| a quantum of electromagnetic energy is called a | photon
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| the wave model of light did not explain | the photoelectric effect
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| the number of orbitals for the d sublevel is | 5
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| for the f sublevel, the number of orbitals is | 7
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| the total number of orbitals that can exist in the second main energy level is | 8
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| the main energy level that can hold only two electrons is the | first
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| which group are the noble gases | 18
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| how many groups are found on the periodic table | 18
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| who was the schoolmaster who studied chemistry and proposed an atomic theory | john dalton
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| rutherford's experiments led to the discovery of the | nucleus
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| organic chemistry is the study of | light
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| the discovery of the electron resulted from experiments using | cathode rays
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| all atoms of the same element have the same | atomic number
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| what is the atomic number for aluminum | 13
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| nickel-60 has | 32 neutrons
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| phosphorus-33 contains | 18 neutrons
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| gamma rays are | electromagnetic waves
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| who called the atom an atom | democritus
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| all of the following are steps in the scientific method except | discarding data inconsistent with the hypothesis
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| quantitative observations are recorded using | numerical information
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| qualitative observations are recorded using | non-numerical information
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| all of the following are examples of units except | weight
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| the symbol for the metric unit used to measure mass is | g
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| the symbol that represents the measured unit for volume is | mL
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| the SI base unit for time is the | second
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| to calculate the density of an object | divide its mass by its volume
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| how many minutes are in one week | 10,080
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| a change in the force of earth's gravity on an object will affect its | weight
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| the study of substances containing carbon is | organic chemistry
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| technology is the | application of scientific knowledge to solve problems
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| basic research is | carried out for the sake of increasing knowledge
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| a physical property may be investigated by | melting ice
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| chemical properties | include changes that alter the identity of a substance
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| two features that distinguish matter are | mass and volume
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| a physical change occurs when | glue gun melts a glue stick
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| the particles in a solid are | packed closely together
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| the particles in a gas are | very far from each other
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| the state of matter in which a material has definate shape and definite volume is the | solid state
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