Unit 1A Vocabulary List

Filtration: When solid particles are separated from a liquid by passing the mixture through a material that retains the solid particles and allows the liquid to pass through.

Filtrate: The liquid collected after it has been filtered.

Adsorbs: Attracts and holds on its surface.

Percent Recovery: The percent of original foul water recovered as purified water

Histogram: A graph compiling data from many groups

Range: The difference between the largest and smallest values in a set of data

Average: You get the average by adding the values together and dividing the sum by the total number of values

Mean: average

Median: The middle value

Electrical Conductivity: The presence of dissolved, electrically charged particles in water

Direct Water Use: Water use that can be directly measured

Indirect Water Use: secondary uses of water that are hidden and rarely noted

Aquifer: A water bearing layer of rock, sand, or gravel

Gaseous State: water vapor 

Liquid State: regular water (lakes, rivers, ocean, etc.)

Solid State: everything has a solid state (example- ice is water in solid form)

Matter: Something that occupies space and has a mass

Physical Properties: Properties that can be measured and observed without changing its chemical makeup

Density: The mass of material within a given volume

Freezing Point:  physical property & is at 0 Celsius

Aqueous Solution: Water solutions with liquids dissolved in them/ not fully pure water

Mixture: It is when 2 or more substances combine and retain their individual properties

Heterogeneous Mixture: A non universal mixture that isn't always the same

Suspension: A heterogeneous mixture with solid particles that are big enough to settle out or particles that can be separated by using filtration

Tyndall Effect: Where particles are too small to see, but large enough to reflect light coming from a beam to the left of the beakers

Colloid: A mixture with the Tyndall effect

Homogeneous Mixture: a universal mixture

Solutions: Homogeneous mixtures

Solute: A dissolved substance

Solvent: The dissolving agent