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Introduction to Chemistry Final Study Guide

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  • How many significant figures are in 67000m?
    2 significant figures.
  • How many significant figures are in 50.9m?
    3 significant figures.
  • How many significant figures are in 00.783cm?
    3 significant figures.
  • How many significant figures are in 34.0200mi?
    6 significant figures.
  • Convert 24 ft to meters.
    24 ft = 7.3 meters.
  • Convert 4.2 km to yards.
    4.2 km = 4600 yards.
  • Convert 300 ml to quarts.
    300 ml = 0.32 quarts.
  • Convert 2.04×10⁻¹¹ km³ to in³ using 2.54 cm = 1 in.
    2.04×10⁻¹¹ km³ = 1245 in³.
  • Calculate the volume of a rock with density 2.03 g/ml and mass 12.5 g.
    Volume = 6.2 ml.
  • Calculate the density of a metal with volume 17.3 ml and mass 20.4 g.
    Density = 1.2 g/ml.
  • Classify Sulfur Dioxide: pure substance or mixture? Element or compound?
    Pure substance, compound.
  • Classify a pizza: pure substance or mixture? Homogeneous or heterogeneous?
    Mixture, heterogeneous.
  • Classify Chromium (Cr): pure substance or mixture? Element or compound?
    Pure substance, element.
  • Classify C3H7OH: pure substance or mixture? Element or compound?
    Pure substance, compound.
  • Classify wine: pure substance or mixture? Homogeneous or heterogeneous?
    Mixture, homogeneous.
  • Classify Sodium (Na): pure substance or mixture? Element or compound?
    Pure substance, element.
  • Is color a chemical or physical property?
    Physical property.
  • Is wood burning a chemical or physical property?
    Chemical property.
  • Is density a chemical or physical property?
    Physical property.
  • Is acidity a chemical or physical property?
    Chemical property.
  • How many joules are required to raise 25 g of iron from 12°C to 23°C? (Specific heat = 0.231 J/g°C)
    63.5 joules.
  • Number of protons and electrons in Ba atom?
    56 protons, 56 electrons.
  • Number of protons and electrons in Zn²⁺ ion?
    30 protons, 28 electrons.
  • Number of protons and electrons in chloride ion (Cl⁻)?
    17 protons, 18 electrons.
  • Number of protons and electrons in lithium ion (Li⁺)?
    3 protons, 2 electrons.
  • Number of protons and electrons in krypton atom?
    36 protons, 36 electrons.
  • Balance the reaction: Ba(NO3)2 + AlBr3 → BaBr2 + Al(NO3)3
    Balanced coefficients: 3, 2, 3, 2.
  • Balance the combustion of pentane: C5H12 + O2 → CO2 + H2O
    Balanced coefficients: 1, 8, 5, 6.
  • Balance the combustion of butanol: C4H9OH + O2 → CO2 + H2O
    Balanced coefficients: 1, 6, 4, 5.