2 Semester I Review How many sig-figs are found in each number? 0.345 30053003.002
3 Semester I Review Round each number to three sig-figs. 45678 0.002894 23.76100.556.799
4 Semester I Review Which of the following is a mixture. Pure water Clean airIron (II) oxideSalt waterCarbon dioxide
5 Semester I Review Which of the following is a chemical change. Cutting paperBoiling waterRusting ironBurning gasoline
6 Complete the table using the given numbers SymbolMass #Atomic #ProtonsNeutronsElectronsX - ___1015Y - 3514Z - ___5625
7 Semester 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.
8 Semester I Review25.0 grams of a given metal displaces 44.2 mL of water; what is the density of the metal?
9 Semester I ReviewWhat did each scientist contribute to the development of the modern atom.DaltonThomsonRutherfordMilliken
10 Determine 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.
11 Semester 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.
12 Semester I Review Decay of polonium-218 by alpha () emission. Decay of carbon – 14 by beta emissionDecay of Thorium by an electron capture
13 Semester 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?
14 Semester 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
15 Semester I ReviewIdentify each of the letters on the graph and explain what is occurring.CDEFG
16 Semester 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?
17 Semester 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
18 Semester 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
19 Semester I ReviewName the compoundsH2SO3H2SH3PO4HCNH3PHBrHClO
20 Semester I Review Give the formula for the following compounds hydrofluoric acidhydroselenic acidcarbonic acidnitrous acidsulfuric acidhydrobromic acidChlorous acid