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.
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Is a photosynthesis chemical or chemical reaction?
Photosynthesis is a series of chemical reactions that convert carbon dioxide and water into glucose (sugar) and oxygen in the presence of sunlight.
Why is photosynthesis a chemical process?
Concepts Covered. Photosynthesis requires energy, making it an endothermic reaction. Light, generally sunlight, is the source of this energy. The process converts the sun’s electromagnetic energy into chemical energy, which is then stored in chemical bonds in the plant.
Why is photosynthesis a chemical equation?
The photosynthesis chemical equation states that the reactants (carbon dioxide, water and sunlight), yield two products, glucose and oxygen gas. The single chemical equation represents the overall process of photosynthesis.
What evidence proves photosynthesis is a chemical change?
In chloroplasts, light energy causes water drawn from the soil to split into molecules of hydrogen and oxygen. In a series of chemical reactions, the hydrogen combines with carbon dioxide from the air, forming a simple sugar. Oxygen from the water molecules is given off in the process.
What type of reaction is photosynthesis?
Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.
Which type of process is photosynthesis?
In chemical terms, photosynthesis is a light-energized oxidation–reduction process.
Which statement about photosynthesis is correct?
Answer: Plants get the energy they need for photosynthesis from sunlight.
Is photosynthesis a chemical energy?
In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. Oxygen is released as a byproduct. In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process.
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.
What is photosynthesis short answer?
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Is this a physical or chemical reaction?
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.
Which activity is an example of a chemical change?
Examples of chemical changes are burning, cooking, rusting, and rotting.
What are the two chemical reactions in photosynthesis?
Light-dependent and light-independent reactions are two successive reactions that occur during photosynthesis.
What is the chemical name of photosynthesis?
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
Where does the chemical reaction for photosynthesis occur?
The light-dependent reactions of photosynthesis take place within the thylakoids. These reactions occur when the pigment chlorophyll, located within the thylakoid membranes, captures energy from the sun (photons) to initiate the breakdown of water molecules.
Which statement is false for photosynthesis?
In green plants, only PS-I is required for the formation of NADPH+H+. Thus, this statement is false.
Do plants need energy for photosynthesis?
They make it themselves! Plants are called autotrophs because they can use energy from light to synthesize, or make, their own food source.
Why are leaves green?
So, plants and their leaves look green because the “special pair” of chlorophyll molecules uses the red end of the visible light spectrum to power reactions inside each cell. The unused green light is reflected from the leaf and we see that light.
What energy does photosynthesis use?
During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.
Is photosynthesis kinetic or potential?
So, the correct answer is ‘Kinetic energy to chemical energy to potential energy’.
What is the product of photosynthesis?
During the process of photosynthesis plants break apart the reactants of carbon dioxide and water and recombine them to produce oxygen (O2) and a form of sugar called glucose (C6H12O6).
Who discovered photosynthesis?
Dutch-born British physician and scientist Jan Ingenhousz is best known for the discovery of the process of photosynthesis, by which green plants in sunlight absorb carbon dioxide and release oxygen.
Do plants breathe?
Yes, like animals plants also breathe. All living organisms, including plants, receive their energy required for their survival from a chain of chemical reactions called respiration.
Did you know facts about photosynthesis?
Photosynthesis is the reverse of cellular respiration. However, photosynthesis produces the sugar glucose, which is an energy storage molecule. Cellular respiration takes the sugar and turns it into a form both plants and animals can use. Photosynthesis requires carbon dioxide and water to make sugar and oxygen.