In which case would the kinetic energy of particles be increasing?
1.In which case would the kinetic energy of particles be increasing?
ANSWER: Metal is heated from room tempature to 200C
2.Water boils at 100°C and turns into steam. Which similarities or differences are there between water at 100°C and steam at 100°C?
ANSWER:The particles will have more space between them as steam, but they will be moving at the same speed in both states.
3.An ice cube tray full of water is put into a freezer. Which energy change occurs in the particles in the water as it undergoes a phase change from a liquid to a solid?
ANSWERThe potential energy decreases due to the tighter arrangement of the particles.
4.An increase in thermal energy leads to _____
ANSWERan increase in heat and an increase in kinetic energy until a phase change occurs.
5.A student wants to collect data during an experiment about the transfer of kinetic energy in a sample of water and ice. Which tool will help her collect the necessary data?
ANSWER:thermometer
6.A student records the temperature of several water samples as shown in the table. Other than the temperature, the water samples are the same. Which sample has the lowest kinetic energy?
ANSWER:4
7.The arrows in the pot represent _____.
ANSWER:convection
8.A teacher opens a window on a cold day. Which statement explains why the room starts to feel cooler?
ANSWER:Air moves from the areas of higher temperature to areas of lower temperature.
9.A student takes the temperature of a bottle of liquid water and a tub filled with ice. The student then places the bottle of liquid water into the tub of ice. After 15 minutes, which of the follow best describes what happens to the temperature of each?
ANSWER:The temperature of the ice increases, while the temperature of the water decreases
10.The process shown in the photo is _____
ANSWER:heat transfer by radiation.
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increasing temperature
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The kinetic energy of particles can increase in various scenarios. One example is when an external force is applied to the particles, increasing their speed. Another scenario is when a substance undergoes a phase transition, such as evaporation or sublimation. During these transitions, the particles gain energy and move more quickly, resulting in an increase in their kinetic energy.
To determine if the kinetic energy of particles is increasing in a specific case, you can use the equation for kinetic energy:
Kinetic energy (KE) = 1/2 * mass * velocity^2
When the mass of the particles remains constant, an increase in the velocity will lead to an increase in kinetic energy. Therefore, if you observe an increase in particle velocity, you can conclude that the kinetic energy of the particles is increasing.
Additionally, it's important to note that temperature is related to the average kinetic energy of particles in a substance. As the temperature increases, the average kinetic energy of particles also increases. So, if you see a temperature increase in a system, it implies that the kinetic energy of the particles has increased as well.