2Semester I Review How many sig-figs are found in each number? 0.345 30053003.002
3Semester I Review Round each number to three sig-figs. 45678 0.002894 23.76100.556.799
4Semester I Review Which of the following is a mixture. Pure water Clean airIron (II) oxideSalt waterCarbon dioxide
5Semester I Review Which of the following is a chemical change. Cutting paperBoiling waterRusting ironBurning gasoline
6Complete the table using the given numbers SymbolMass #Atomic #ProtonsNeutronsElectronsX - ___1015Y - 3514Z - ___5625
7Semester I ReviewCalculate the average atomic mass given the following data: element Y has three isotopes 35.0% = 23.5 amu, 55.0% = 25.0 amu and 10.0% = 26.0 amu.
8Semester I Review25.0 grams of a given metal displaces 44.2 mL of water; what is the density of the metal?
9Semester I ReviewWhat did each scientist contribute to the development of the modern atom.DaltonThomsonRutherfordMilliken
10Determine if the data below is accurate, precise, both, or neither Trial #MeasurementTrue Value = 34.50134.56234.45334.78Calculate the percent error using the average of the measurements.
11Semester I Review The splitting of a nucleus is known as ________. The combining of two small nuclei to form a larger one is known as __________.Give the formula of an alpha particle and beta particle.
12Semester I Review Decay of polonium-218 by alpha () emission. Decay of carbon – 14 by beta emissionDecay of Thorium by an electron capture
13Semester I ReviewThe half-life of phosphorous-30 is 2.5 min. If you start with 55 g of phosphorus-30, how many grams would remain after 27.5 min?
14Semester I ReviewCalculate the specific heat of an unknown metal, given that 25.0g of the metal lost 3570 J of energy during a temperature change from 100.0oC to 25.0oC
15Semester I ReviewIdentify each of the letters on the graph and explain what is occurring.CDEFG
16Semester I ReviewLabel the solid, liquid, and gas regions on the graph.Label the triple point and critical pointAt 600oC and 90 atm, what phase is yummygum in?
17Semester I Review Give the formula for the following compounds 1) iron (II) arsenide2) lead (II) sulfate3) lead (IV) hydroxide4) copper (II) acetate5) beryllium chloride6) ammonium chromate7) silver oxide8) potassium sulfide
18Semester I Review Give the name of the following compounds 1) NaBr 2) Sc(OH)33) V2(SO4)34) NH4F5) CaCO36) NiPO47) Li2SO38) Zn3P29) Sr(C2H3O2)210) Cu2O
19Semester I ReviewName the compoundsH2SO3H2SH3PO4HCNH3PHBrHClO
20Semester I Review Give the formula for the following compounds hydrofluoric acidhydroselenic acidcarbonic acidnitrous acidsulfuric acidhydrobromic acidChlorous acid