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Yes, it is a chemical change (reaction) though it carried out by microorganisms (Lactic acid bacteria):
Out of glucose through the Embden-Meyerhof-Parnas (EMP) pathway yielding two moles of pyruvate.
- glucose + 2 NAD+ + 2 ADP + 2 Pi → 2 pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O
Intracellular redox balance is maintained through the oxidation of NADH, concomitant with pyruvate reduction to lactic acid.
Two steps in short formula:
C6H12O6 --'EMP'--> 2 C3H3O3- + 2 H+ --'Reduct'--> 2 C3H6O3
and in words:
glucose -> 2 pyruvate (2-oxopropanoate) + 2H+ -> 2 lactic acid (2-hydroxypropanoic acid)
What else can I help you with?
When milk turns sour is it a chemical or physical change?
chemical change
How is sour milk a chemical change?
When milk turns sour, it is a chemical change because the bacteria in the milk ferment the lactose sugar into lactic acid, which changes the composition of the milk. This process cannot be easily reversed, making it a chemical change rather than a physical one.
milk tuning sour is an chemical change?
Yes, milk turning sour is a chemical change. This is because the bacteria present in the milk ferment the lactose sugars, producing lactic acid which changes the chemical composition of the milk, resulting in the sour taste and smell.
Is milk turning sour a physical change?
No, milk turning sour is a chemical change because the bacteria in the milk interact with the lactose to produce lactic acid, changing the composition of the milk.
Can you consider a chemical change souring a milk?
Yes, when milk sours, it undergoes a chemical change due to the actions of bacteria that ferment the lactose in the milk, producing lactic acid. This change in pH causes the milk to coagulate and develop a sour taste and smell.
Is milk that turns sour a chemical change?
Yes.
When milk turns sour is it a chemical or physical change?
chemical change
Is milk turning sour a physical or chemical change?
Milk turning sour is a chemical change. It occurs due to the fermentation of milk sugars by bacteria, leading to the production of lactic acid, which changes the taste and smell of the milk.
How is sour milk a chemical change?
When milk turns sour, it is a chemical change because the bacteria in the milk ferment the lactose sugar into lactic acid, which changes the composition of the milk. This process cannot be easily reversed, making it a chemical change rather than a physical one.
milk tuning sour is an chemical change?
Yes, milk turning sour is a chemical change. This is because the bacteria present in the milk ferment the lactose sugars, producing lactic acid which changes the chemical composition of the milk, resulting in the sour taste and smell.
Is sour milk a chemical?
yes See Is Sour Milk a physical or chemical change for more info
When milk turns sour this is a physical change because a change in odor does not indicate a chemical change?
Actually, when milk turns sour, it is primarily a chemical change rather than a physical change. This occurs due to the fermentation process, where bacteria convert lactose (milk sugar) into lactic acid, resulting in a change in odor, taste, and texture. The formation of new substances, such as lactic acid, signifies a chemical change, as opposed to a mere alteration of physical properties.
Milk goes sour a physical or chemical change?
It is a chemical change because there is a chemical reaction occurring that is rotting the milk. An example of a physical change would be if the milk was evaporated or frozen.
Is milk turning sour a physical change?
No, milk turning sour is a chemical change because the bacteria in the milk interact with the lactose to produce lactic acid, changing the composition of the milk.
Is milk sours a physical or chemical change?
chemical change
Is milk sour chemical or physical?
chemical because u cant change it back into fresh milk
What is Milk going sour is physical or chemical?
Chemical. If anyone wants to put more detail, please do.
