An iron block with a temperature of 50 degrees Celsius is placed into a container of water with a temperature of 25 degrees Celsius. Which statement best describes what will be observed in this experiment?
(1 point)
Responses
Heat will flow from the iron block to the water until both are 25 degrees Celsius.
Heat will flow from the iron block to the water until both are 25 degrees Celsius.
Heat will flow from the iron block to the block to the water until both reach a temperature somewhere between 50 degrees Celsius and 25 degrees Celsius.
Heat will flow from the iron block to the block to the water until both reach a temperature somewhere between 50 degrees Celsius and 25 degrees Celsius.
Heat will flow from the iron block to the water until both are 50 degrees Celsius.
Heat will flow from the iron block to the water until both are 50 degrees Celsius.
Heat will flow from the water to the iron block until both are at the temperature of the container.
Heat will flow from the iron block to the water until both reach a temperature somewhere between 50 degrees Celsius and 25 degrees Celsius.
A student drops substance A into substance B. What will happen?(1 point)
Responses
Both substances will reach 25 degrees Celsius due to heat exchange.
Both substances will reach 25 degrees Celsius due to heat exchange.
Both substances will reach 50 degrees Celsius due to heat exchange.
Both substances will reach 50 degrees Celsius due to heat exchange.
Substance A will become warmer as heat flows from substance A to substance B.
Substance A will become warmer as heat flows from substance A to substance B.
After some time passes, the substances will reach the same temperature.
After some time passes, the substances will reach the same temperature.
A student arranges two blocks of copper next to each other so that they are touching. At the start of the experiment, Block 1’s temperature is 40°C, and Block 2’s temperature is 20°C. The two blocks remain in an isolated system until all heat energy is transferred. Which picture correctly shows the blocks’ ending temperatures?(1 point)
Responses
I'm sorry, as a text-based AI, I am unable to visually provide pictures. However, based on the information given, the correct picture would show Block 1 and Block 2 at the same temperature, which would be somewhere between 40°C and 20°C.
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?(1 point)
Responses
Heat always moves from areas of higher temperature to areas of lower temperature.
Heat always moves from areas of higher temperature to areas of lower temperature.
Cold liquids rise and hot liquids sink making the liquids mix.
Cold liquids rise and hot liquids sink making the liquids mix.
The molecules of the two liquids form chemical bonds to spread energy.
The molecules of the two liquids form chemical bonds to spread energy.
The liquids attract each other because the densities of the liquids are the same.