Photosynthesis is considered an endothermic reaction, because during the process of photosynthesis, energy from the sun or sunlight is being absorbed.
Why is photosynthesis an endothermic?
Photosynthesis is an endothermic reaction as it requires light energy to react carbon dioxide and water to produce glucose and oxygen. The light energy required is absorbed by a green pigment called chlorophyll in the leaves.
Why respiration is an exothermic reaction?
Because heat is produced during the process of respiration, it is an exothermic process. The carbon dioxide in the food breaks down to create glucose during the process. This glucose reacts with oxygen in our cells, releasing a large amount of energy.
Is respiration exothermic or endothermic?
Respiration is a series of exothermic reactions that occur in the mitochondria of living cells in order to release energy from food molecules.
Which type of process is photosynthesis?
In chemical terms, photosynthesis is a light-energized oxidation–reduction process.
What type of change is photosynthesis?
Photosynthesis is the process through which plants convert light energy into chemical energy. Here is the chemical reaction involved: water and carbon dioxide combine to form glucose and oxygen. Since new chemical species are formed, photosynthesis is clearly a chemical change.
Which process is an example of an exothermic reaction?
An exothermic reaction is defined as a reaction that releases heat and has a net negative standard enthalpy change. Examples include any combustion process, rusting of iron, and freezing of water.
Is burning of natural gas exothermic?
The combustion of methane or octane is exothermic; it releases energy.
Which choice is an example of an endothermic process?
Examples of endothermic processes are melting of ice, evaporating water.
What are three examples of endothermic reactions?
Melting ice cubes. Melting solid salts. Evaporating liquid water. Converting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processes.
What makes a reaction an exothermic reaction?
Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Exothermic reactions are accompanied by an increase in temperature of the reaction mixture.
Why respiration is a endothermic reaction?
Respiration is an exothermic process as it releases heat or energy. During our breathing process, we feel warmer air coming outside which happened due to the respiration reaction in our body.
How do you know if its exothermic or endothermic?
When energy is released in an exothermic reaction, the temperature of the reaction mixture increases. When energy is absorbed in an endothermic reaction, the temperature decreases. You can monitor changes in temperature by placing a thermometer in the reaction mixture.
How do you know if a reaction is endothermic?
If you have to heat the reactants to keep the reaction going or if it cools down during the process, the reaction is endothermic.
How do you explain photosynthesis?
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
What is the reaction of photosynthesis?
6CO2 + 6H2O + Light C6H12O6 + 6O2
Algae, plants and photosynthetic bacteria take in light through the sun, water molecules from their environment and carbon dioxide from the air and combine these reactants to produce the food i.e. glucose.
What is true for photosynthesis?
So the correct option is ‘Carbon dioxide is reduced and water oxidised‘.
What is the first change in photosynthesis?
The chlorophyll molecule absorbs the photon of light, and its electron gets excited. This excited electron is received by the primary acceptor. Thus, the excitation of an electron of chlorophyll by a photon of light represents the first step of photosynthesis.
Is photosynthesis a reversible reaction?
On a larger scale, photosynthesis and cellular respiration are “reversible” processes in terms of the chemical equations.
Why is photosynthesis a chemical change?
It is a chemical change because carbon dioxide and water cannot be obtained back from glucose and oxygen.
Are photosynthesis and respiration exothermic?
As glucose is broken down into carbon dioxide, water, and ATP energy, the respiration reaction is exothermic. The photosynthesis reaction is endothermic because in the presence of sunlight and chlorophyll, carbon dioxide and water, or we can assume the heat is transformed into endothermic glucose reaction.
Is photosynthesis Exergonic or Endergonic?
Photosynthesis is an endergonic (energy-consuming) process. Cellular respiration is an exergonic (energy-releasing) process. Which process must ALL Eukaryotic organisms (including plants) do to make ATP?