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A plant must light energy before it can be used for photosynthesis?
absorb
What must be absorb before a chemical reaction can start by the reactants?
energy
When is a reaction said to be endothermic?
The chemical reactions that must absorb energy in order to proceed. These are endothermic reactions.
Energetically what must be done or what must happen before water can boil?
The water must absorb sufficient heat energy to raise its temperature to the boiling point PLUS the Latent Heat of Vaporization at that Temperature and Ambient Pressure..
Why must roots absorb water?
Because roots are provided with root hairs to absorb water.
If a refrigerator is a heat pump that follows the first law of thermodynamics how much heat was removed from food inside of the refrigerator if it released 240J of energy to the room?
Not enough information. The refrigerator must also follow the Second Law.The energy released to the room is the energy removed from the room, PLUS the energy used by the refrigerator (for example, as electrical energy).
A plant must light energy before it can be used for photosynthesis?
absorb
What must be absorb before a chemical reaction can start by the reactants?
energy
When an electron gets excited is energy released or absorbed?
To get excited, it must absorb energy. To get back to its ground state, it releases energy.
What happens when an electrons jumps from one energy level to another?
It must absorb or give off energy
Plant must light energy before it can be used for photosynthesis?
absorb ramon C.
WOULD AN ELECTRON HAVE TO ABSORB OR RELEASE NEW ENERGY TO FALL FROM THE THIRD ENERGY LEVEL TO THE SECOND ENERGY LEVEL?
It would release energy. It had to absorb it in order to get from 2 to 3. Law of conservation of energy says it must now release it to fall back.
When is a reaction said to be endothermic?
The chemical reactions that must absorb energy in order to proceed. These are endothermic reactions.
Do electrons release energy when they move to a higher energy level?
No, electrons must absorb energy in order to move to a higher energy level. They release energy when they move to a lower energy level.
What do electrons need to jump levels?
The correct answer is "energy".
Why do cells absorb energy and nutrients?
Because the cells themselves need energy to perform their specific function, and to reproduce!
Does melting lose or gain energy?
Generally, melting is the process of turning from a solid to a liquid. It entails gaining energy.
