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51 Cards in this Set
- Front
- Back
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List 2 physical properties of magnesium.
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its atomic weight is 24, and its a metal
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list a chemical property of magnesium
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when Mg reacts with O it forms MagnesiumOxide
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sublimination
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the process of a material transforming from a solid to a gas without passing through the liquid phase
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list 4 evidences of a chemical change
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change in color, where burning occurs, where rust occurs, new substance formed
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what is applied chemistry?
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chemistry used to produce something useful
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what is the variable in an experiment
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the part of the experiment that is manipulated to produce a certain outcome.
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how do theories laws and hypotheses differ?
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a hypothesis is an educated guess
a theory is an idea about an observation that is accepted but can evolve, a law is a proven idea |
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list any 5 subatomic particles besides protons electrons and neutrons
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alpha particle, beta particle, hadron, baryon, quatark
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halogens
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they are diatomic and are in group 7A
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inner transitions
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they are the biggest group and consist of the lanthanide and actinide series
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largest family on the periodic table
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group 3B
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list 5 diatomic elements
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chlorine, bromine, iodine, astatine, fluorine
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How do compounds and mixtures differ?
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compounds contain chemically altered elements and have "a recipe" in mixtures elements retain their properties and have no recipe
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True or False You can be precise without being accurate
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true
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what are metalloids?
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metalloids are elements that contain both metal and nonmetal qualities used in making computer chips
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ate radicals form __ acids whle ite radicals form __ acids
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ic, ous
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binary compounds, except acids, end in ___
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ide
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the only binary compunds that use prefixes to indicate numbers of atoms are those involving two _______
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nonmetals
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binary acids begin with the prefix ___ and end with the suffix ___
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hydro, ic
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NO3
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nitrate, -1
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CO3
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carbonate, -2
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PO4
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phosphate, -3
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OH
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hydroxide, -1
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SO4
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sulfate, -2
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CN
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cyanide, -1
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NH4
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ammonium, +1
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Thomson
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found the charges in atoms using a ray
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Chadwick
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founded neutrons in the atoms' nucleus
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Rutherford
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found that the atoms' mass is held primarily in its nucleus
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Dalton
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found that atoms are the building blocks of every material
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What law is obeyed when you are given that 2Mg + O2 --> 2MgO
48 + 32 = 2(24 + 16) |
law of mass conservation
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what law is followed when you are given that water is 89% oxygen and 11% hydrogen
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Law of definite composition
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father of modern chemistry
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lavoisier
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efforts to turn less expensive elements in to Au
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alchemy
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6.02 x 10^23
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avogadro's number
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modern periodic table arrangement
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mendeleev
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HCL
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hydro chloric
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HBr
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hydrobromic
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HI
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hydro iodic
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H2SO4
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sulfuric acid
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H2PO4
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phosphoric acid
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H2CO3
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carbonic acid
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dinitrogen pentaoxide
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N2O5
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tetraphosphorous decaoxide
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P4O10
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iron (III) chloride
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FeCl3
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chromium (II) oxide
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CrO
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(NH4)2SO4
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ammonium sulfate
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Cu3(PO4)2
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copper (II) phosphate
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write correct forumlas for binary compunds in 1A-3A metals + nonmetals
potassium sulfide aluminum oxide magnesium bromide |
K2S
Al2O3 MgBr2 |
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examples that are NOT chemical changes
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sublimation of iodine, melting of ice cubes, melting of a substance at 79* C
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True or False To be a correct formula for a compund, the cards we used last week had to form squares or rectangles. This happened because the number of electrons gained by the metals was equal to the number of electrons lost by nonmetals.
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False
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