The curriculum in the Eighth Grade of Bronxville Middle School is primarily one that studies the nature of matter, Chemistry. In the pursuit of this study the students discuss and observe the various physical properties of matter. They observe, develop protocols, and carry out inquiries into these physical properties. They then learn different techniques that are based on these properties and can be used to separate different phases/forms of matter from a mixture. One major performance assessment is the sludge test, in which the students are given a sample of sludge and asked to use what they have learned to separate it into its component substances.
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| Google....sludge.......Sludge refers to the residual, semi-solid material left from industrial wastewater, or sewage treatment processes. It can also refer to the settled suspension obtained from conventional drinking water treatment,[1] and numerous other industrial processes. The term is also sometimes used as a generic term for solids separated from suspension in a liquid; this 'soupy' material usually contains significant quantities of 'interstitial' water (between the solid particles). |
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| (Apologies to the Monotones) "I wonder, wonder, what's in my tube of sludge!" |
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| Let's see if we can find it in here........muck.....mud.....ooze......ah...here it is SLUDGE! |
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