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convection and radiation
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What 3 changes of state absorb thermal energy?
Melting, evaporation, and sublimation are changes of state that absorb thermal energy. During these processes, the particles in a substance gain energy to break intermolecular bonds and overcome attractive forces between them, resulting in an absorption of thermal energy.
How can the temperature of a substance remain the same even if the substance is absorbing thermal enerrgy?
The temperature of a substance can remain the same during absorbing thermal energy if the substance is undergoing a phase change, such as melting or boiling. During a phase change, the absorbed thermal energy goes into breaking intermolecular bonds rather than increasing the temperature. Once the phase change is complete, the temperature will resume rising as the substance absorbs more thermal energy.
What looks like a boiling tube with a hole?
A test tube with a side arm, also known as a boiling flask, resembles a boiling tube with a hole. The side arm allows for the release of pressure or the addition of other materials during heating processes, making it suitable for distillation or reflux reactions.
How do cell phones use thermal energy?
Cell phones use thermal energy generated by their internal components, especially the battery and processor, during operation. This thermal energy is a byproduct of the energy conversion processes that occur within the device and can affect its temperature. Heat dissipation mechanisms, such as heat sinks and thermal pads, help to manage and dissipate this thermal energy to prevent overheating and maintain the device's functionality.
What happens to the thermal energy of a substance during a change of state?
it will increase or decrease depending on the states. from solid --> liquid or liquid --> gas it is positive and endothermic, and thermal energy is increasing from liquid --> solid or gas --> liquid it is negative and exothermic, and thermal energy is decreasing
Does food value diminish during cooking process?
Some cooking processes, such as boiling, will leach nutrients out of food, lowering its nutritional value.
What 3 changes of state absorb thermal energy?
Melting, evaporation, and sublimation are changes of state that absorb thermal energy. During these processes, the particles in a substance gain energy to break intermolecular bonds and overcome attractive forces between them, resulting in an absorption of thermal energy.
Is energy released or energy absorbed during condensation?
thermal energy is released during condensation.
How can the temperature of a substance remain the same even if the substance is absorbing thermal enerrgy?
The temperature of a substance can remain the same during absorbing thermal energy if the substance is undergoing a phase change, such as melting or boiling. During a phase change, the absorbed thermal energy goes into breaking intermolecular bonds rather than increasing the temperature. Once the phase change is complete, the temperature will resume rising as the substance absorbs more thermal energy.
When Hydrogen sulfide is boiling is it a chemical or physical change?
Boiling hydrogen sulfide is a physical change, as it is a reversible process where the substance changes from a liquid to a gas due to the absorption of thermal energy. The chemical composition of hydrogen sulfide remains the same during boiling.
Is heat generated during boiling?
Boiling is an endothermic process.
When a sample of liquid boils thermal energy increases or decreases?
When a sample of liquid boils, thermal energy increases. This added thermal energy allows the molecules to overcome intermolecular forces and transition from the liquid phase to the gas phase. As a result, the temperature of the liquid remains constant during the boiling process, even though energy is being supplied.
What looks like a boiling tube with a hole?
A test tube with a side arm, also known as a boiling flask, resembles a boiling tube with a hole. The side arm allows for the release of pressure or the addition of other materials during heating processes, making it suitable for distillation or reflux reactions.
What happens to polythene during and after heating?
Walendziewski and Steininger reported the thermal degradation of polyethylene in the temperature range 370–450°C. In the case of thermal degradation of polyethylene, an increase in degradation temperature led to an increase of gas and liquid products, but a decrease of residue (boiling point > 360°C).
How do cell phones use thermal energy?
Cell phones use thermal energy generated by their internal components, especially the battery and processor, during operation. This thermal energy is a byproduct of the energy conversion processes that occur within the device and can affect its temperature. Heat dissipation mechanisms, such as heat sinks and thermal pads, help to manage and dissipate this thermal energy to prevent overheating and maintain the device's functionality.
Does chlorine boil out of water during the boiling process?
Yes, chlorine can evaporate out of water during the boiling process.
What happens to the thermal energy of a substance during a change of state?
it will increase or decrease depending on the states. from solid --> liquid or liquid --> gas it is positive and endothermic, and thermal energy is increasing from liquid --> solid or gas --> liquid it is negative and exothermic, and thermal energy is decreasing
