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84 Cards in this Set
- Front
- Back
- 3rd side (hint)
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what's an example of a chemical change
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adding baking soda to vinegar in an attempt to make a small erupting "volcano" of foam
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a student obtains 2.50g of aspirin in lab. he calculated ahead of time that he should make 2.65g. what is his theoretical yield?
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2.65gpro
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property of sulfur
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brittle
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heterogeneous mixture
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sAlsa
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example of potential energy
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water at the top of a waterfall
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example of a physical change
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shredding paper
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example of a homogeneous mixture
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steel
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classified as an element
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helium
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true statement
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your weight is the result of the pull of gravity & does not change your mass
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energy
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the capacity oR ability to do work
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Daytons atomic theory originally stated in 1808
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atoms can be subdivided, created, & destroyed
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theoretical yield
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the amount of product a student was supposed to produce, as calculated ahead of time
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gamma ray
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form of energy that can be emitted during radioactive decay that is a stream of electrons with very high energy
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law of definite proportions
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The elemental composition of a pure source is always the same, regardless of the source
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law of multiple proportions
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when two elements combine, they do so in ratios of small whole numbers and have a fixed weight
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law of conservation of mass
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matter can not be created nor destroyed
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exothermic reactiob
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in lab, sodium hydroxide was mixed with water. The temperature increased sharply.
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endothermic reaction
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in lab, ammonium nitrate was next with water. The temperature decreased sharply.
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thomson
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discovered the presence of the electron using a cathode ray tube and determined it's charge
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what is the correct assumption regarding the gold-foil experiment?
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The nucleus is very small compared to the energy levels and positively charged
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true statement
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protons and neutrons have approximately the same mass while the electron is lighter
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isotope
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have the same number of protons and electrons but different number of neutrons and have the same atomic number but different mass number
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what has the mass number of 40?
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calcium
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how many neutrons does uranium – 238 have?
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146
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238-92=146
238-(atomic #)=146 |
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what is the identity of the element represented by [Ne]3S23P5?
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chlorine
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electromagnetic spectrum
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when wave lengths are short energy is high and when frequency is high energy is high
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alpha particle
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form of energy that can be emitted during radioactive decay that has the same mass number and atomic number of helium
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Bohr's model of the hydrogen atom
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electrons travel around the nucleus as the planets orbit the sun
electrons travel in fixed paths or orbitals a certain distance from the nucleus if an electron changes energy levels there is a quantum energy change when electrons drop from a higher energy level to a lower energy level they emit it energy from the form of a photon |
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beta particle
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form of energy that can be emitted during radioactive decay that has no Mass number but carries a -1 charge
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and Atom with 16 protons and 17 neutrons would be an isotope of what element
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sulfur
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gamma rays
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form of energy released during radioactive decay that can only be stocked by lead or very thick concentrate
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halogens
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Group of elements that is most active nonmetals all having seven valance electrons
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noble gases
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considered electronically perfect
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The maximum number of electrons that the D sublevel can hold is
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10
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how many electrons, maximum, can the third main energy level hold
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18
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which one of the elements can be found in the P block
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selenium
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A member of the halogens
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bromine
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how many valence electrons does sulfur have
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6
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what is an example of a noble gas
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argon
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how many electrons remain unpaired for the element nitrogen
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3
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what is an example of a D block element
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titanium
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what quantum number will tell you the size of an Atom
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principal
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what call some number represents the direction in which the electrons are traveling and can also represent the electrons with arrows or +1/2, -1/2
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spin
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what is an example of the transition elements
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copper
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what's an example of the alkali metals
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sodium
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hunds rule
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electrons remain unpaired as long as possible before pairing due to their like charges
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Heisenberg principal
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it's impossible to determine both the speed and location of an electron at the same time
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Henry Mosley's work
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elements show periodic repetition of properties
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DeBrogile's work
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electrons have wavelike behaviors and have certain frequencies
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how many energy levels would you need to draw to accurately represent the element tin
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5
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what's an example of an alkaline earth metal
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calcium
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what's correct about most elements
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large radius=low electronegativity= low ionization energy
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how many valence electrons does calcium have
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2
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alkali metalw
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Group of elements will form very strong bases and explode when placed in water
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what is most likely to form an ionic bond
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calcium and nitrogen
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max planck
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Hot objects when subjected to energy such as sunlight, emit it that energy in specific amount called quanta
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Erwin schrodinger
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stated that electrons have both wavelike properties and particle properties and developed an equation that treated electrons in atoms as waves
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einstein
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stated that electromagnetic Bridget has wavelike properties, that particle stream, and that each particle of like carried a quantum of energy
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bohr
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electrons travel a specific distance from the nucleus like planets orbiting the sun
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what's most likely to form a covalent bond
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carbon and chlorine
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what will not form a cation
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fluorine
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what property in general increases as you move left to right across the periodic table in a period?
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electronegativity and ionization energy
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what intermolecular force produces an instantaneous dipole do you to call sinc swirl of electrons his forces get stronger as the molecules increases and weight?
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London dispersion
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salt bridge
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A piece of paper soaked in salt water that allows ions to flow BU does not allow to solutions to mix
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what intermolecular forces found between polar molecules only and has a short range and produces compounds with very high boiling points
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dipole – dipole all
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what type of intermolecular force is found between hydrogen and a very electronegative element
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hydrogen
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trigonal pyramidal
polar and soluble |
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tetrahedral
nonpolar and nonsoluble |
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bent
polar and soluble |
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what's the correct name for Cu(NO2)2
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cupric nitrite
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what's the correct name for the compound Cu2O
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copper I oxide
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what's the name of the compound C3O4
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tricarbon tetroxide
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what's the correct formula for carbon disulfide
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CS2
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what is calcium phosphate
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Ca3
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what's the name for Co2(SO4)3
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cobalt III sulfate
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what bond will there be a sharing of electrons producing an uneven distribution of charge in a molecule that is symmetrical
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nonpolar covalent
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what's the correct chemical formula for phosphoric acid
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H3PO4
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Who was the first scientist to publish the periodic table
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mendeleev
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in the double replacement reaction between silver nitrate and sodium iodide in lab, what is the spectator ions
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sodium and nitrate
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aq
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dissolved in water
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ppt
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precipitate (substance produced is a solid)
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---^-->
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requires heat
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---pt--->
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reaction requires a catalyst
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g
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gas is produced
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