Polymers are large molecules composed of repeated chemical units. The smallest repeating unit is called a mer. The term polymer is derived from the Greek words poly and mers meaning “many parts.”
Study on the leaching of phthalates from polyethylene terephthalate bottles into mineral water
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Water Solutions Lesson: pH of Common Household Chemicals Activity Title: pH of Common Household Chemicals Grade Level: 6-9 Subject: Physical Science/Chemistry Lesson Length: One 50-minute class period
In chemistry, diprotic acid is a class of Arrhenius acids which are capable of donating two protons or hydrogen cations per molecule when dissociating in aqueous solutions. The dissociation equations of a diprotic acid in water can be written as:
Structure and bonding. The carbonate ion is the simplest oxocarbon anion.It consists of one carbon atom surrounded by three oxygen atoms, in a trigonal planar arrangement, with D 3h molecular symmetry.
Mineral water: Mineral water, water that contains a large quantity of dissolved minerals or gases. Mineral water from natural springs commonly has a high content of calcium carbonate, magnesium sulfate, potassium, and sodium sulfate.
Take no offense, but I consider toasted ravioli, our omnipresent appetizer, a dubious claim to culinary fame. Sadly, most renditions I’ve ever tasted have been dense and chewy, or worse yet, oozing with grease. My philosophy: If you’re going to submit to the calories of deep-frying, then why not