Sour Milk Milk that has turned sour has undergone a chemical change. Yes, because it changed to a different substance then before.
http://wiki.answers.com/Q/Is_sour_milk_a_physical_or_ch...
|
|
milk going sour is a chemical change because it can't be reversed. Most physical changes can be reversed for example snow melting is a physical change because it can freeze again.
http://wiki.answers.com/Q/How_is_sour_milk_a_chemical_c...
|
|
|
Chemical change is any change that results in the formation of new chemical substances. At the molecular level, chemical change involves making or breaking of bonds between atoms. These changes are chemical: ... milk souring (sour-tasting lactic acid is produced)
|
antoine.frostburg.edu/chem/senese/101/matter/faq/physic...
antoine.frostburg.edu/chem/senese/101/matter/faq/physical-chemical.shtml
|
|
|
|
Milk needs to be in the refrigerator or else it will go bad. If you've ever seen or smelled spoiled milk, it is not a pretty sight. The milk gets a sour odor and becomes lumpy. Unlike physical changes, you cannot reverse chemical changes.
|
nyu.edu/pages/mathmol/textbook/whatismatter.html
|
|
|
Oct 6, 2009 ... ChaCha has the answer to this question: Is milk going sour a chemical change Answer: Yes. Milk going sour is the chemical production of ...
|
www.chacha.com/question/is-milk-going-sour-a-chemical-c...
www.chacha.com/question/is-milk-going-sour-a-chemical-change
|
|
|
Physical Changes Chemical Changes ... Aluminum foil is cut in half. Milk goes sour. ... There are many cases where the distinctions between physical changes and chemical changes are unclear. For example:
|
www.learner.org/courses/essential/physicalsci/session4/...
www.learner.org/courses/essential/physicalsci/session4/closer1.html
|
|
|
Subject: Why does milk sour? ... I am actually interested in the biochemical processes of milk turning sour. As well as ways to know (other than smelling) if milk has gone bad. Who and what determines the expiration date - and why would the expiration date bew different in NYC than other NY towns?
|
www.madsci.org/posts/archives/jun99/927816857.Ag.q.html
|
|
Milk left on the counter turns sour. ... Chemical changes in everyday life include burning, rusting, paint drying(because it combines with oxygen and actually gains weight) souring of milk, and digestion of food.
|
www.emsb.qc.ca/laurenhill/science/ps1.html
|
|
Utah Agriculture in the Classroom; 46; Microorganisms in the Macrocosm; Sour Milk; Bacterial Growth in Milk; In both pasteurized and raw milk, various microorgan-isms succeed one another as the chemical environment of the milk changes. The microbes themselves bring about these changes. The stages of microbial growth...
|
extension.usu.edu/AITC/lessons/pdf/micro_sour.pdf
extension.usu.edu/AITC/lessons/pdf/micro_sour.pdf
|
|
