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Molarity
Preparing a solution
Dilution
Solubility rules
Complete & Net Ionic Equations
Colligative properties
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Heat Flow
Energy diagrams
Thermochemical equations
Heating/ Cooling curves
Specific Heat Capacity
Calorimetry
Hess's Law
Enthalpies of formation
Bond enthalpies
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Collision Theory
Rate Comparisons
Integrated Rate Law
Differential Rate Law
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Equilibrium
Equilibrium Expression
ICE Tables
Calculating K
K vs Q
Le Chatelier's Principle
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Definitions
Conjugate Acids & Base Pairs
Autoionization of water
pH Scale
Strong Acids/ Bases
Ka and Kb
Buffer
Titrations
Indicators
pH salts
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Entropy
Gibb's Free Energy
G and Temperature
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Oxidation numbers
Half Reactions
Balancing Redox reactions
Voltaic cells
Cell potential (standard conditions)
Cell potential (non-standard)
Electrolysis
Quantitative Electrochemistry
Density
Related Examples and Practice Problems
Topic Related Question Bank Categories
Density calculations: Practice using the density formula
Density comparisons: Comparing the densities to determine which will float or sink
Density and volume relationships: Changes in mass or volume affect density
Density and temperature relationships: Impact of temperature on density
View problems here.
Topic Summary & Highlights
and Help Videos
Core Concept
Density is the amount of mass per given volume. It is expressed as density = mass/ volume
Think of density as “how much stuff is in a given space.” Usually the space is considered a 1 cubic block, for comparisons.
Common units for density include: grams/ milliliter (g/mL) or grams/cubic centimeter (g/cm3)
Density is an intensive property meaning that it is value specific to the substance, no matter amount. If you have a huge block of copper or just a small cube -- the density of both will always be the same, since it is copper. For this reason, if you have an unknown substance you can find its density and try to match it to a list of known substances and their density to help identify it.
Calculating Density with a Graph:
Density on graph: y-axis is mass; x-axis is volume. Therefore the density = slope of the line.
Slope = Δy/ Δx = mass / volume (= the formula for density)
