A student drops substance A into substance B. What will happen?(1 point)
Responses
Both substances will reach 50 degrees Celsius due to heat exchange.
Both substances will reach 50 degrees Celsius due to heat exchange.
After some time passes, the substances will reach the same temperature.
After some time passes, the substances will reach the same temperature.
Both substances will reach 25 degrees Celsius due to heat exchange.
Both substances will reach 25 degrees Celsius due to heat exchange.
Substance A will become warmer as heat flows from substance A to substance B.
5 answers
Substance A will become warmer as heat flows from substance A to substance B.
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
Responses
Unfortunately, as an AI text-based model, I cannot see or analyze pictures. However, in this scenario, the two blocks of copper will reach thermal equilibrium, which means that they will eventually reach the same temperature. Therefore, the correct picture would show both blocks at the same temperature, likely somewhere between 20°C and 40°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 liquids attract each other because the densities of the liquids are the same.
The liquids attract each other because the densities of the liquids are the same.
The molecules of the two liquids form chemical bonds to spread energy.
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 liquids attract each other because the densities of the liquids are the same.
The liquids attract each other because the densities of the liquids are the same.
The molecules of the two liquids form chemical bonds to spread energy.
Heat always moves from areas of higher temperature to areas of lower temperature.
1 answer