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Bezzdna [24]
2 years ago
9

Which events represents a chemical change ?

Chemistry
2 answers:
8_murik_8 [283]2 years ago
5 0
D milk turning sour 
the other options are physical changes
yawa3891 [41]2 years ago
3 0
Hihi!

The answer would be D. milk turning sour! What happens when milk goes sour is it<span> ferment lactose at room temperature and which turns it into lactic acid. More acid means more hydrogen ions, a lower pH and a </span>sour<span> taste. Lower pH change the structure of proteins like casein, which gives </span>milk<span> its whiteness, so it curdles into clumps called curds! It's pretty gross!</span>

I hope I helped!
-Jailbaitasmr
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  • When our energy is as low as possible, we are in the ground state.
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Thus, Aromatic side chain exhibits an electronic excited state that is closer in energy to the ground state.

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4 0
2 years ago
Determine the work done by an ideal gas while expanding by a volume of 0.25 L against an external pressure of 1.50 atm (assume a
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Conversion used : (1 L.atm = 101.3 J)

Expansion work = 0.375 × 101.3 = 37.9 J

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6 0
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