Question 1 (1 point)
The diagram below shows two substances, A and B, which are at different temperatures.
What will happen when substance A is dropped into substance B?
a
Substance A and B will eventually reach the same temperature.
b
Substance A and B will exchange heat, and they both will reach 25°C.
c
Substance A and B will exchange heat, and they both will reach 50°C.
d
Substance A will get even warmer as heat flows into it from substance
B. Substance A will get even warmer as heat flows into it from substance B.
b) Substance A and B will exchange heat, and they both will reach 25°C.
To answer this question, we need to understand the concept of heat transfer and how temperature differences between two objects can affect the direction of heat flow.
When two substances are at different temperatures, they will exchange heat until they reach thermal equilibrium, which means they have the same temperature. Heat flows from objects with higher temperatures to objects with lower temperatures.
In this scenario, substance A is dropped into substance B, which means they are in contact with each other. Substance A is at a higher temperature than substance B. According to the concept of heat transfer, heat will flow from substance A to substance B.
Based on the answer choices provided:
a) Substance A and B will eventually reach the same temperature - This answer is correct since heat will continue to flow from substance A to substance B until they reach thermal equilibrium.
b) Substance A and B will exchange heat, and they both will reach 25°C - This answer is not correct since we do not have any information about the specific temperatures of substances A and B. We only know that substance A is at a higher temperature than substance B.
c) Substance A and B will exchange heat, and they both will reach 50°C - This answer is not correct since we do not have any information about the specific temperatures of substances A and B. We only know that substance A is at a higher temperature than substance B.
d) Substance A will get even warmer as heat flows into it from substance B - This answer is not correct since heat flows from higher temperature objects to lower temperature objects. Substance A will lose heat to substance B, causing its temperature to decrease, not increase.
Therefore, the correct answer is a) Substance A and B will eventually reach the same temperature.