naenae2cold12021
27.08.2019 •
Chemistry
Wks 3.1 - classifying matter (2 pages)
complete the blank labels in the diagram below.
can be separated
physically
e
definite composition s
(homogeneous)
mixture of
substances
variable composition
can be separated
chemically
(examples: water
sodium chloride)
(examples: carbon
hydrogen, oxygen)
uniform
also called a solution
nonuniform:
distinct phases
in alamiananeous mixture heteropencous mixture, compound, or an element.
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Ответ:
When carbon dioxide (CO2) is absorbed by seawater, chemical reactions occur that reduce seawater pH, carbonate ion concentration, and saturation states of biologically important calcium carbonate minerals. ... Since the beginning of the Industrial Revolution, the pH of surface ocean waters has fallen by 0.1 pH units