Water World Definitions Flashcards
Pure substances are…
Substances that consists only of one element or one compound.
Mixtures are…
A mixture consists of two or more different substances, not chemically joined together.
Filtration is when…
A circle of filter paper is folded to make a cone and placed into a filter funnel which is placed on top of the clonical flask. The liquid is then poured into the funnel and the filter paper collects the residue as the filtrate runs down into the flask to be collected.
Chromatography is…
A technique to separate the components of a mixture, these are often coloured substances such as food colourings, inks, dyes or plant pigments. Chromatograms can be used to match known pigments with those in a mixture On a chromatogram, one spot means that the substance is pure. An impure substance produces two or more spots. Other times chromatography paper is used…
Decanting is when…
A stirring rod separates a liquid from a solid by carefully pouring off the liquid, leaving the solid behind, using the rod to guide the flow and prevent disturbance of the settled solid.
Evaporation is when…
A substance, typically water, changes from a liquid to a gaseous state (water vapour) at temperatures above its boiling point, driven by factors like heat and surface area.
A solute is…
and a
A solvent is…
In a solution, the solute is the substance being dissolved, while the solvent is the substance doing the dissolving and is present in the larger amount.
A solution is…
A homogeneous mixture of one or more solutes dissolved in a solvent
Something that is soluble is something that…
Is capable of being dissolved in a liquid, forming a solution.
Something that is insoluble is something that…
Cannot dissolve in a liquid, especially water
What does Homogeneous mean?
A homogeneous mixture is one that’s mixed or blended together so well that all of the ingredients will not separate out, even over time.
