Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

Densities of liquids Concepts 1. Density is a physical property of materials 2. Equal volumes of different things usually have different weights 3. Heating and cooling cause changes in properties 4. Principle of Archimedes Chemical properties cannot be quantified: they are described by chemical reactions in which the substance participates. Physical properties can be expressed quantitatively measured by mathematical formulas derived from the basic units of measurement: Length, time, mass and charge. Density is one such physical property of substances that scientists use on a regular basis. For synthetic organic chemists two uses are important. First it is often more convenient and safe to measure a liquid by volume than by weight. In order to know the weight and therefore the number of molecules, the density of the substance must be known. Second when mixing water and a water insoluble liquid it is important to know which liquid phase will float on the top of the...

To see the full version of this document, and 145,841 others