An iron block with a temperature of 250 degrees Celcius is placed into a container of water with a temperature of 50 degrees Celcius. Which statement best describes what will be observed in this experiment?
A. Heat will flow from the iron block to the water until both are 250 degrees Celcius.
B. Heat will flow from the iron block to the water until both are 50 degrees Celcius.
C. Heat will flow from the water to the iron block until both are at the temperature of the container.
D. Heat will flow from the iron block to the block to the water until both reach a temperature somewhere between 500 degrees Celcius and 250 degrees Celcius.
C. Heat will flow from the water to the iron block until both are at the temperature of the container.
A student drops substance A into substance B. What will happen?
A. Both substances will reach 50 degrees Celsius due to heat exchange.
B. Both substances will reach 25 degrees Celsius due to heat exchange.
C. Substance A will become warmer as heat flows from substance A to substance B.
D. After some time passes, the substances will reach the same temperature.
D. After some time passes, the substances will reach the same temperature.
When you add cold milk and hot chocolate, they will slowly blend as the cooler liquid mixes with the warmer liquid. Eventually, the heat will be spread out evenly through the entire liquid. Which statement best explains why this happens?
A. The liquids attract each other because the densities of the liquids are the same.
B. Cold liquids rise and hot liquids sink making the liquids mix.
C. The molecules of the two liquids form chemical bonds to spread energy.
D. Heat always moves from areas of higher temperature to areas of lower temperature.
D. Heat always moves from areas of higher temperature to areas of lower temperature.
C. Heat will flow from the water to the iron block until both are at the temperature of the container.
To determine the correct answer, we need to understand the concept of heat transfer between objects of different temperatures. Heat always flows naturally from an object with a higher temperature to an object with a lower temperature until thermal equilibrium is reached.
In this experiment, the iron block has a temperature of 250 degrees Celsius, which is higher than the temperature of the water at 50 degrees Celsius. Therefore, according to the concept of heat transfer, heat will flow from the iron block to the water until both objects reach the same temperature.
Based on this, we can conclude that the correct statement is:
C. Heat will flow from the water to the iron block until both are at the temperature of the container.