Which is a physical change?
A) Kerosene burning
B) Decomposition of water by electrolysis
C) Salt dissolving in water
D) Converting alcohol to vinegar
Correct Answer:
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Q6: A sample of water absorbs 3.00 x
Q7: How many joules of energy are released
Q8: 300.0g of water is at 12.0ºC.The water
Q9: Hydrogen combines with oxygen to form water.If
Q10: How many kilojoules of energy are absorbed
Q12: 400.0g of a metal absorbs 10000.J of
Q13: How many kiloJoules of energy are released
Q14: A 400.0g sample of water is at
Q15: 250.0g of a metal releases 5000.J of
Q16: Which phase change absorbs energy?
A)HOH (l)
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