bond energy
the energy that goes into changing a substance from a solid to a liquid (melting) is called the latent heat of fusion.
EER
Under what. Condition heat can given to a substances without raising its temperature
Energy is needed to keep your body in action!
Intermolecular forces, i.e. hydrogen-bonds, have to be broken down in order for water molecules to escape to the vapor phase. Energy is needed in the process to set water molecules free.
How much energy is required to move the electron of the hydrogen atom from the 1s to the 2s orbital
The energy needed to break a bond between two atoms is the called the bond energy. The SI units for bond energy are kJ/mol.
ionization energy
The energy needed to start a chemical reaction is called the activation energy :)
The energy needed to start a chemical reaction is called the activation energy :)
Each energy level corresponds to an exact amount of energy needed by the electron to orbit the nucleus. Transitions from a higher energy level to a lower energy level correspond to the difference in the energy needed for an electron to occupy those two energy levels. This difference creates the emission spectrum.
activation energy
The energy needed to completely vaporize a mole of a liquid
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activation energy.
It can be measured in any energy unit you like, just as you can measure the length of a book in any length unit. Chemists most often use kilojoules.
This is called: Activation energy (abbrev. Ea)