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Its released or adsorbed. Its "physical" because no new substance(s) is produced.
What else can I help you with?
Gas is burnt to cook a meal is it an energy conversion or an energy transfer?
How does it happen? If there's a chemical change, it's energy conversion, if it's a physical change, it's energy transfer.
What happen to the temperature of a substance during a phase change?
The temperature* remains unchanged. * The heat (energy) content changes.
Do energy changes happen during a irreversible change?
yes, bacause if u plug a charger in a socket, the energy is comin out, but wen u take the charger back out of the socket, there is no energy left.
Is the addition of heat to solid sodium chloride until it melts is a chemical reaction?
Chemical reactions happen on a molecular level Physical reactions are concerned with a change in state or energy level, so melting is considered a physical reaction since there is no molecular change just a change in state.
What will happen if there is no physical and chemical change?
The system remain unchanged.
What characteristics best describe what happen during a physical change?
The compsitions stays the same :0
What do you think will happen to the temperature of a substance during a phase change?
During a phase change, the temperature of a substance remains constant. This is because the energy being absorbed or released is used to break or form intermolecular bonds, rather than to change the temperature of the substance.
Physical change of a green plant?
The physical changes that happen in green plants are the changes in appearance. The difference between a sprout and a full grown plant is a physical change.
Is the addition of heat to solid sodium chloride until it melts a chemical reaction?
Chemical reactions happen on a molecular level Physical reactions are concerned with a change in state or energy level, so melting is considered a physical reaction since there is no molecular change just a change in state.
Is cutting of tree a chemical change?
No. Trees' leaves change colors beacuase when winter comes around, they will not have the energy to keep leaves, so they seal off the leaves from the rest of the tree. When the leaves are cut off from the rest of the tree, the chlorophyll in them dies, and turns brown.
How does the presence of enzymes affect the change in free energy during a chemical reaction?
Enzymes lower the activation energy required for a chemical reaction to occur, which in turn decreases the overall change in free energy. This allows the reaction to proceed more easily and efficiently, making it more likely to happen.
When does physical chang happen?
a physical change happens when something is changed physically, for example, snapping a twig or popping a balloon is physical change, but actions like burning wood or cooking an egg are not physical.
