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75 Cards in this Set
- Front
- Back
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An example of an extensive property of matter is _______. |
mass and volume |
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Which of the following are considered physical properties of a substance? |
colo, odor, melting and boiling point, malleability, and hardness |
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Which state of matter has a definite volume and takes the shape of its container |
liquid |
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Which state of matter expands when heated and is easy to compress |
gas |
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Which of the following is a heterogeneous mixture |
oil and water oil and vinegar |
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The expression of 5008 km in scientific notation is _______. |
5.008 x 10^3 |
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The chief advantage of the metric system over other system of measurements is that _______. |
in multiples of 10 |
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Which temperature scale has no negative temperatures |
Kelvin |
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What is the quantity 0.0075 meters expressed in centimeters |
0.75 cm |
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Density is found by dividing ________. |
mass/volume |
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The smallest particle of an element that retains the properties of that element is an ________. |
atom |
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The comparison of the number of atoms in a copper coin the size of a penny with the number of people on Earth is made to illustrate which of the following? |
to show how small atoms are |
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Which of the following is true about subatomic particles |
the mass of neutrons nearly equals mass of protons |
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All atoms are ______. |
neutral with number of protons equaling the number of electrons |
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The particles that are found in the nucleus of an atom are _______. |
protons and neutrons |
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The sum of the protons and neutrons in an atom equals the _______. |
mass number |
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isotopes of the same element have different _______. |
number of neutrons |
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in which of the following is the number of neutrons correctly represents |
49 protons and 49 electrons U 238 = 146 neutrons |
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In Bohr's model of the atom, where are the electrons and protons located |
electrons outside nucleus in electron cloud and protons in center (nucleus) |
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What is the maximum number or orbitals in the p sub level |
3 |
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If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital |
counterclockwise |
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What is the electron configuration of potassium |
1s2 2s2 2p6 3s2 3p6 4s1 |
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Stable electron configurations are likely to contain _______. |
filled energy sub levels |
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What are quanta of light called |
photons |
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Which of the following elements is in the same period as phosphorus |
magnesium |
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Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements |
Dmitri Mendeleev |
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Which of the following categories includes the majority of the elements |
metals |
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Of the elements Pt, V, Li, and Kr, which is a nonmetal |
kr |
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which of the following is true about the electron configuration of the noble gases |
highest occupied s and p sub level completely full |
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which subatomic particle plays the greatest part in determining the properties of an element |
electron |
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which of the following elements in a transition metal |
Au copper |
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what is the charge of a cation |
positive |
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which of the following statements is true about ions |
when cations form, more electrons are transferred to it
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which of the following statements correctly compares the relative size of an ion to its neutral atom |
the radius of an anion is greater than the radius of its neutral atom |
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how many valance electrons are in an atom of phosphorus |
5 |
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what is the name given to the electrons in the highest occupied energy level of atom |
valance electrons |
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how does calcium obey the octet rule when reacting to form compounds |
gives up 2 electrons |
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what is the electron configuration of the calcium ion (a 2+ ion) |
1s2 2s2 2p6 3s2 3p6 |
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the octet rule states that, in chemical compounds, atoms tend to have _____. |
eight electrons in their principal energy level (nobel gas configuration) |
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how many electrons does nitrogen gain in order to achieve a noble gas electron configuration |
3 |
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how does oxygen obey the octet rule when reacting to form compounds |
Gains electrons |
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what is the charge on the cation in the ionic compound sodium sulfide |
+1 |
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what is the net charge of the ionic compound calcium fluoride |
0 |
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How many valance electrons does the calcium atom give up to iodine in the formation of the compound calcium iodine |
2 |
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which of the following is true about the melting temperature of potassium chloride, an ionic compound |
the melting temperature is relatively high |
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which of these elements does not exist as a diatomic molecule |
neon (Ne) nobel gas |
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why do atoms share electrons in covalent bonds |
to attain nobel gas electron configuration |
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which of the following is the name given to the pairs of valance electrons that DO NOT participate in bonding in diatomic oxygen molecules |
unshared pair |
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when one atom contributes both bonding electrons in a single covalent bond, the bond is called a _______. |
ordinate covalent bond |
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how many electrons can occupy a single molecular orbital |
2 |
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a bond that is not symmetrical along the axis between two atomic nuclei is an _____. |
pi bond |
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the shape of the methane molecule is called ____. |
tetrahedral
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which of the forces of molecular attraction is the weakest |
dispersion |
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what causes dipole interaction |
attraction between polar molecules |
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what causes hydrogen bonding |
bonding of a covalently bonded hydrogen atom with an unshared electron pair |
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which type of solid has the highest melting point |
network solid |
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what is the correct name for the N 3- ion |
nitride ion |
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when naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by a ____. |
roman numerical following the name |
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how are chemical formulas of binary ionic compounds generally written |
cation on left, anion on right |
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molecular compounds are usually ______. |
composed of 2 or more nonmetallic elements |
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the nonmetals in group 6A and 7A _____. |
have a numerical charge that is found by subtracting 8 |
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which of the following is NOT a cation |
sulfate |
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an -ate or -ite at the end of a compound name usually indicates that the compound contains ____. |
a polyatomic ion oxygen |
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which of the following compounds contains the Mn 3+ ion |
Mn2O3 |
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which of the following is true about the composition ionic compound |
they are composed of anions and cations |
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which of the following correctly represents an ion pair and the ionic compound the ion form |
Ca 2-, F-, CaF 2 |
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What SI unit is used to measure the number of representative particles in a substance |
mole |
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how many hydrogen atoms are in 5 molecules of isopropyl alcohol , C3 H7 O |
35 |
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Avogadro's number of representative particles is equal to one _____. |
mole |
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the atomic masses of any two elements contain the same number of ______. |
atoms |
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the mass of a mole of NaCl is the ____. |
molar mass |
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the volume of one mole of a substance is 22.4 L at STP for all _______. |
gases |
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which combination of temperature and pressure correctly describes standard temperature and pressure, STP |
0 C 101.3 kPa |
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the lowest whole number ratio of the elements in a compound is called the _______. |
empirical formula |
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which scientist developed the quantum mechanical model of the atom |
Erwin Schrodinger |
