Answer:
C. Yes, the water could be changing the phase.
Explanation:
Same time
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Answer:A
Explanation:
The image is formed behind the mirror.
Answer:
The chemist is incorrect because a catalyst increases the rate of reaction only.
Explanation:
A catalyst is a substance in the presence of which the speed of the reaction increases. It plays no role in the chemical change taking place.
Thus, if the two compounds are not chemically reacting, a catalyst wont make it happen either.
A chemical reaction occurs when atoms tend to lose or gain electrons. A catalyst has no role to play in this process.