Question about Scientific Explorer My First Chemistry Kit
The volume of an object can often be determined easily using the "method of volume displacement." Place the object (for example, a stone) into a graduated cylinder containing a measured volume of water. The stone will displace the amount (volume) of water equal to its volume. For example, if you have filled the graduated cylinder with 50 millilters (mL) of water, and the total volume changes to 60 mL after the stone has been added, you can deduce the stone's volume to be 10 mL (60 - 50). This result obtained from your measurements (your "data") may be used to obtain another very useful bit of information often valuable to chemists: the object's "density": that is, its mass divided by its volume. Density = mass/volume, of D = M/V. The units for density are usually given in grams per mL or grams per cubic centimeters (cc). Note: a 1 mL = 1 cc. The temperature of the water should be indicated for densities because volume varies with it.
Posted on Jan 03, 2011
Posted on Jul 14, 2010
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Posted on Jan 02, 2017
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