for each pair of substances, circle the substance with more thermal energy and explain why? A0 500g of water at 35 degree C VS. 500 g of water at 85 degree C
B) 500 g of water at 35 degree C VS. 250 g of water at 35 degree C
A) Since the masses are equal, there is more thermal energy in the hotter water.
B) Since they are at the same temperature, there is more total thermal energy in the larger mass, 500 g.
Temperature measures thermal energy per mass
A) Circle: 500 g of water at 85 degrees C
Explanation: The substance with more thermal energy is the one with the higher temperature. In this case, the water at 85 degrees C has more thermal energy compared to the water at 35 degrees C because it is at a higher temperature. Think of it this way, the water at 85 degrees C is like a fiery superstar while the water at 35 degrees C is just warming up, not quite as energetic.
B) Circle: 500 g of water at 35 degrees C
Explanation: In this case, both substances have the same temperature, but the substance with more thermal energy is the one with greater mass. So, the 500 g of water at 35 degrees C has more thermal energy compared to the 250 g of water at 35 degrees C because it has a greater mass. It's like having a jumbo-sized drink compared to a regular-sized drink - the jumbo one has more thirst-quenching power!
A) In this pair, the substance with more thermal energy is the 500g of water at 85 degrees C.
Explanation: Thermal energy is directly related to the temperature and the mass of a substance. The higher the temperature and mass, the more thermal energy it possesses. In this case, both substances are water, and their masses are the same (500g). However, the first substance is at a higher temperature of 85 degrees C, while the second substance is at a lower temperature of 35 degrees C. Therefore, the 500g of water at 85 degrees C has more thermal energy compared to the 500g of water at 35 degrees C.
B) In this pair, the substance with more thermal energy is the 500g of water at 35 degrees C.
Explanation: Again, thermal energy is directly related to the temperature and the mass of a substance. In this case, both substances are water, and their temperatures are the same (35 degrees C). However, the first substance has a mass of 500g, while the second substance has a mass of 250g. As the mass of the 500g of water is greater, it possesses more thermal energy compared to the 250g of water.
To determine which substance has more thermal energy in each pair, we need to compare their temperature and the mass of the substances.
Let's start with pair A:
A) 500g of water at 35°C vs. 500g of water at 85°C
To determine which substance has more thermal energy, we compare the temperatures. The substance with a higher temperature has more thermal energy. In this case, the water at 85°C has a higher temperature than the water at 35°C. Therefore, the circle should be around the 500g of water at 85°C. The higher temperature indicates that the water molecules in it are moving faster, possessing more thermal energy.
Moving on to pair B:
B) 500g of water at 35°C vs. 250g of water at 35°C
In this case, the masses of the substances are different, but the temperatures are the same. To determine which substance has more thermal energy, we compare the masses. The substance with a greater mass has more thermal energy. In this case, the 500g of water has a greater mass than the 250g of water. Therefore, the circle should be around the 500g of water at 35°C. The larger mass indicates that there are more water molecules present, resulting in a greater amount of thermal energy.
In summary, for Pair A, the substance with more thermal energy is 500g of water at 85°C, while for Pair B, the substance with more thermal energy is 500g of water at 35°C.
500 g of water
Same temperature if you have more water it takes more energy to heat up