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An introduction to the concept of density as the mass of a substance divided by its volume, using examples such as ethylene glycol to water ratios and the buoyancy of ice. Additionally, it covers the three states of matter - solid, liquid, and gas - and their properties, as well as the difference between homogeneous and heterogeneous mixtures.
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volume that it occupies. Density = mass/volume or d=m/v usually expressed in g/mL We as chemists, often use this as one of the identifiers that is specific to a given substance. But this is not the only reason that we record the density of materials. Examples: The testing of ethylene glycol to water ratios in car radiators. Why does ice float?
What is matter?
To understand matter better we need to take a closer look! Matter exists in three states or phases.
its container)
volume of its container) All interfaces of these three phases have been explored. Examples: LCD monitors on computers and the purification methods that we will discuss shortly Interesting Points: A) The last two states/phases are considered fluids because they can flow. Natural gas, the atmosphere, water and gasoline. B) Gases are easily compressed when compared to solids and liquids. This is related to hydraulics and entropy. When considering commonly observed matter, we see mostly mixtures. Air, gasoline natural gas and antifreeze are mixtures. Mixtures are broken down into two main types:
Homo means same. Hetero means different. Homogeneous mixtures are also called solutions. They are the same throughout
