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Is chocolate melting absorbing or releasing energy?
Melting chocolate requires energy input because the solid chocolate is transitioning into a liquid state. The energy input breaks the molecular bonds holding the solid together, absorbing energy in the process.
What happens to energy when a substance is melted or boiled Is this endothermic or exothermic?
When a substance is melted or boiled, energy is absorbed from the surroundings, which is characteristic of an endothermic process. In melting, the energy breaks the bonds between particles, allowing them to move more freely as a liquid. Similarly, during boiling, energy further breaks the intermolecular forces, transforming the liquid into a gas. Thus, both melting and boiling require energy input, making them endothermic reactions.
What processes are pasive and which are active?
Passive processes do not require energy input and occur spontaneously, such as diffusion, osmosis, and facilitated diffusion. Active processes require energy input to proceed, such as active transport, endocytosis, and exocytosis to move substances against their concentration gradient.
Does melting los or gain thermal energy?
Melting ice absorbs thermal energy from its surroundings in order to break the bonds between water molecules and transition from a solid to a liquid state. This added energy increases the temperature of the ice until it reaches its melting point, at which further energy input will cause the ice to fully melt into liquid water.
What type of reaction releases energy and does not require initial energy to occur?
All reactions require an activation energy. Some appear not to because that energy is provided enough by their temperature. Thus, there is no reaction that does not require any initial energy to occur. A reaction that results in an overall release of energy is called an exothermic reaction.
What are the types of phases change that require energy?
The types of phase changes that require energy are melting (solid to liquid), sublimation (solid to gas), and evaporation (liquid to gas). These phase changes require energy input to break the intermolecular forces holding the particles together in a particular phase.
What term for reactions that require energy input?
Endothermic reactions require energy input to occur. The energy needed is absorbed from the surroundings, resulting in a decrease in temperature during the reaction.
Does raising the temperature require an input of energy?
Yes.
Which process in the human body does not require energy input from respiration?
Diffusion is a body process that does not require energy from respiration.
What doesn't require energy?
Processes such as gravity, diffusion, and osmosis do not require energy input to occur. Additionally, objects at rest do not require energy to maintain their state.
Process of vaporization require an input of energy?
Yes, the process of vaporization does require an input of energy. The energy is required to break the intermolecular forces of a given substance. The intermolecular forces is usually very strong.
What requires more energy melting or boiling?
Melting requires energy input or absorption because liquid water has more energy than solid water.
Is there a generator out there that doesnt require any input energy?
no there must at least be an initial input to get it started.
What are changes of state that require energy?
Melting, vaporization, and sublimation are changes of state that require energy. During these processes, energy is used to overcome intermolecular forces holding the particles together so that they can move more freely.
Is chocolate melting absorbing or releasing energy?
Melting chocolate requires energy input because the solid chocolate is transitioning into a liquid state. The energy input breaks the molecular bonds holding the solid together, absorbing energy in the process.
Does a cooker need energy?
Yes, all ovens/cookers require some energy (fuel) input in order to get them to heat up. For example electric hobs require an electrical imput, gas cookers require gas as their fuel (energy) etc... Even solar cookers have a solar energy input.
Is it true or false that all chemical reactions require an initial input of energy called catalysis?
False. Not all chemical reactions require catalysis. Some reactions occur spontaneously, while others may require an initial input of energy in the form of activation energy. Catalysis is a process that lowers the activation energy required for a reaction to occur, but it is not necessary for all reactions.
