WGU chemistry I

WGU chemistry I Leave the first rating Students also studied Terms in this set (36) Western Governors UniversityD 425 Save WGU Chemistry Teacher 73 terms erika_laken_kemp Preview WGU Intro to Chemistry (D425) 15 terms Gentry_Rose9 Preview Chemistry D425 108 terms STARZXPRESS Preview WGU- 124 term amb Practice questions for this set Learn1 / 7Study using Learn Fe(S) + Cu+2 (aq) +2Cl-(aq)-----Fe+2(aq)+2Cl-(aq)+Cu(s) Double replacementAB+CD----AD+CB strong acid and strong baseNeutralization Forms solidsPrecipitation single replacementNa2O+Cl2-----NaCl+O2 Choose an answer 1iron placed in CuCl2 Total ionic equation 2iron placed in CuCl3 Total ionic equation 3copper placed in FeCl2 Total ionic equation 4iron placed in FeCl2 molecular equation Don't know?

combustion reactionmust contain hydrogen, carbon, and oxygen CH4+O2---CO2+H2O common acidsHCl, H2SO4, HNO3, H3PO4, CH3COOH Molecular CompoundLiquid or gas at room temperature Synthesis reaction2 small compounds join to make one Na+Cl2---NaCl Decomposition ReactionCompounds split NaCl------Na+Cl2 neutralization reactionOccurs between acid and base Produces salt and water look for production of water it will always be in product Mole conversion30gNa X(1mole/23gNA)=1.3 moles Moles to atoms1.5 moles C X (6.022X10^23/1mole)= 9.03X10^23 atoms to moles1.617X10^22 X(1mole/6.022X10^23)=0.03 moles Grams to atoms50gC X(1mole/12.01GC)X(6.022X10^23/1mole)=2.51X10^24atoms stoichiometry5gCa3(PO4)2 X (1moleCa3(PO4)2/310.3g) X (3moles CaCl2/1mole Ca3(PO4)2)X(111.1gCaCl2/1moleCaCl2) = 5.37g CaCl2 Empirical formulacalculate mole relationship of all and place in least amount form RutherfordMatter is mostly empty space. There must be a very small positively charged area of the atom Electromagnetic WavesThe greater the wavelength the lower the frequency. The shorter the wavelength the greater the frequency Energy levelsEnergy levels closer to the nucleus have lower energy S=2 P=6 D=10 F=14 Octet structureAll compounds have 8 electrons through shared bonds atomic radiusThe more shells gives a larger radius (R to L and T to B increases Ionization EnergyIncreases left to right and bottom to top ElectronegativityFluorine highest electronegativity element increases left to right and bottom to top DipolesHigh electronegativity, pulls the other elements to it (the elements with the fewest shells) Hunds ruleShows one spin per box until on boxes are filled then goes back to place second spin in box

Auf Bau's RuleCan't skip a box arrows in opposite direction must fill the box before moving to next element Pauli ExclusionSpins must rotate in opposite directions Ionic CompoundFurthest apart on the periodic table, least electrotivity, names of each change

ending to Ide example: Na2O=Sodium Oxide

Covalent BondClose on the periodic table greater electrotivity, pre-fix in name except mono on

first element example: SO2= Sulfur Dioxide

Specific heat formulaHeat transferred (J) = Mass X Grams X change in temperature matterHomogenous or heterogeneous

Homogenous: mixture or pure

Pure: element or compound

Soluble in waterC: Chlorate

A: Acetate

S: Sulfates

H: Hologens

N: N'itrates

GIA: Group 1 A

copper wire placed in FeCl2 solutionCu+FeCl2-----Fe+CuCl2 (No reaction) Iron placed in CuCl2 balanced equationFe+CuCl2-----FeCl2+Cu iron placed in CuCl2 Total ionic equationFe(S) + Cu+2 (aq) +2Cl-(aq)-----Fe+2(aq)+2Cl-(aq)+Cu(s) iron placed in CuCl2 net ionic equationEliminate spectators from total ionic equation: Fe(S)+Cu+2(aq)-----Fe+2(aq)+Cu(s)