CHEM 1201 Final Exam With 100% Correct And Verified Answers 2024, Exams of Advanced Education

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CHEM 1201 Final Exam With 100%

Correct And Verified Answers 2024

Diatomic Molecule (2.2) - Correct Answer-molecule made up of 2 identical atoms (ex: H2, N2, O2) Molecular Compounds (2.2) - Correct Answer-compounds composed of molecules Molecular Formula (2.2) - Correct Answer-give the exact number of atoms (ex: H2O2, CH4) Empirical Formula (2.2) - Correct Answer-gives the lowest and most simplified version of numbers (ex: HO, CO, CH4) Ionic Compound (2.2) - Correct Answer-Between a metal and nonmetal, when written their powers are reversed with the atom next to them (ex: Mg2N3, Mg has 3 charge and N has 2 charge) Combination Reactions (3.1) - Correct Answer-2 or more substances react to form one product (A+B=C) Decomposition Reaction (3.1) - Correct Answer-when 1 substance breaks down into 2 or more substances (C=A+B) Combustion Reactions (3.1) - Correct Answer-Involve oxygen reacting with a hydrocarbon to production CO2 and H2O (CH4 + 2 O2 = CO2 + 2 H2O) this produces a flame Percent Composition (3.1) - Correct Answer-Formula: %Element=(number of atoms) (atomic weight)/(molecular weight of compound) X 100 Avogadro's Number (3.1) - Correct Answer-6.022 X 10^23 of any unit Molar Mass (3.1) - Correct Answer-grams/mole strong Electrolyte (4.1) - Correct Answer-dissociates into ions when dissolved in water, strong electrolyte is aqueous, have strong acids and bases, ionic compound weak electrolyte (4.1) - Correct Answer-may dissolve in water but doesn't dissociate completely into ions, equations indicate chemical equilibrium (reaction goes both forward and backward) Non-electrolyte (4.1) - Correct Answer-doesn't dissociate in water, only composed of non-metals formed from molecular compounds (covalent compound)

Precipitation Reactions (4.1) - Correct Answer-result in formation of insoluble product, pairs of oppositely charged ions attract each other Metathesis (exchange) reaction (4.1) - Correct Answer-swapping ions in solution, 1)Molecular Equation (ME) where all compounds labeled aq or s and balanced out. 2)Complete Ionic Equation (CIE) where the aq compounds are written in expanded form but the s compounds aren't. 3)Net Ionic Equation (NIE) cross out the atoms that are the same on both sides (spectator ions) Neutralization Reactions (4.1) - Correct Answer-when an acid and base react with one another Molarity (4.2) - Correct Answer-concentration, moles/liters Frequency (6.1) - Correct Answer-v, number of waves from peak to peak that pass a point, measured in Hertz, 1Hz=1s^- Wavelength (6.1) - Correct Answer-weird y symbol, nanometers, 1nm=1 X 10^-9m Speed of Light equation (6.1) - Correct Answer-c=yv, c=3.00 X 10^8 m/s Energy of photon equation (6.1) - Correct Answer-E=hv, h is Planck's Constant= 6.626 x 10^-34 Js, also can be E=hc/y subshell (6.1) - Correct Answer-orbitals with same n and l Degenerate orbitals (6.1) - Correct Answer-the amount of boxes when writing out orbitals, s=1, p=3, d=5, f=7, each box has to get filled with 1 arrow before adding a second arrow to any other box Zeff (effective nuclear charge) (7.1) - Correct Answer-Zeff= Z (atomic number) - S (electrons shielded from nucleus), depends on the distance from the nucleus, increases going from left to right in a column Isoelectronic Series (7.1) - Correct Answer-when a list of elements ALL have the name number of electrons, ions get smaller when the nuclear charge becomes more positive because more electrons are getting attracted towards nucleus Formal Charge (8.2) - Correct Answer-collective charge of an atom, take valence electron - number of bonds - nonbinding electrons and this gets you formal charge of an element Resonance Structures (8.2) - Correct Answer-Lewis Structures that differ with placement of the electrons

Exception #2 (8.2) - Correct Answer-there can be less than an octet for atoms in 1A, 2A, and 3A Exception #3 (8.2) - Correct Answer-there can be more than an octet in atoms from the 3rd period and below Lattice Energy (8.2) - Correct Answer-if the atoms in compound both have same energy and you are comparing two compounds then look at the atomic radius, the compound with smallest radius has the greatest lattice energy Endothermic Energy Changes (11.2) - Correct Answer-Melting/Fusion, Vaporization, and Sublimation (values are greater than 0) Exothermic Energy Changes (11.2) - Correct Answer-Decomposition, Condensation, and Freezing (values are less than 0) Viscosity (11.2) - Correct Answer-resistance of liquid to flow, depends on how strong intermolecular forces are and tendency of molecules to become entangled and the temperature (if temp increases then there will be lower viscosity) Bulk Molecules (11.2) - Correct Answer-In surface tension the bulk is attracted to other neighboring molecules equally Density Formula - Correct Answer-mass/volume (g/mL) Heterogeneous Mixture (1.1) - Correct Answer-diverse substance where you are able to see the physical boundary Homogeneous Mixture (1.1) - Correct Answer-mixed so well that one can't see presence of more than 1 substance