Is photosynthesis a chemical change yes or no?
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.
What type of chemical change is photosynthesis?
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.
Is photosynthesis a chemical?
Photosynthesis is the process of creating sugar and oxygen from carbon dioxide, water and sunlight. It happens through a long series of chemical reactions. But it can be summarized like this: Carbon dioxide, water and light go in. Glucose, water and oxygen come out.
Is photosynthesis a chemical change or a physical change give reason?
The chemical reaction which takes place in photosynthesis process involves reaction between six mole of carbon dioxide and six mole of water to form one mole of glucose and six mole of oxygen. As a new product is formed in this process, therefore photosynthesis is a chemical change.
How photosynthesis is a physical process?
Photosynthesis is indeed a physico-chemical process done by species which contains chlorophyll: Physical, because it involves the absorption of sunlight as a source of energy.
Which of the following is not a chemical change?
The correct answer is Freezing of water. Freezing is a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point. Freezing of water is not a chemical change as ice when melt changes back to water showing the physical change.
What is photosynthesis reaction?
Photosynthesis reaction involves two reactants, carbon dioxide and water. These two reactants yield two products, namely, oxygen and glucose. Hence, the photosynthesis reaction is considered to be an endothermic reaction.
What is photosynthesis explain it with chemical reaction?
Photosynthesis is a process by which phototrophs convert light energy into chemical energy, which is later used to fuel cellular activities. The chemical energy is stored in the form of sugars, which are created from water and carbon dioxide.
Which statement about photosynthesis is correct?
Answer: Plants get the energy they need for photosynthesis from sunlight.
Is respiration a chemical change?
Respiration is a chemical change as new substances like carbon dioxide and water are formed. Also there is change in the mass as glucose is oxidised by oxygen and heat is released. This change is permanent. All these factors conclude that respiration is a chemical change.
Which of the following is a chemical change?
Growth of a plant, rusting of iron, cooking of food, digestion of food, and burning the candle are chemical changes because here is the chemical composition of the substance changes.
How does chemical change happen during photosynthesis in plants?
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
Which process is a chemical change?
Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
Which of these is an example of a chemical change?
Burning, cooking, rusting and rotting are examples of chemical changes.
How does photosynthesis relate to chemistry?
Photosynthesis is the process of converting light energy (E = h v) to chemical energy and storing it in the chemical bonds of sugar-like molecules. This process occurs in plants and some algae (Kingdom Protista). Plants need only light energy, CO2, and H2O to make sugar.
What is photosynthesis for 5th graders?
Photosynthesis is the process in which green plants use sunlight to make their own food. Photosynthesis is necessary for life on Earth. Without it there would be no green plants, and without green plants there would be no animals. Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas.
Is photosynthesis a single replacement?
1 Answer. Photosynthesis is a single displacement reaction.
Which state about photosynthesis is false?
In green plants, only PS-I is required for the formation of NADPH+H+. Thus, this statement is false.
What is false photosynthesis?
Photosynthesis takes place in the chloroplasts. Oxygen is a reactant of photosynthesis. Plants respire during the day as well as night. Plants photosynthesise during the night….Answer Keys:
| 1 | True |
|---|---|
| 2 | False |
| 10 | False |
Is respiration a physical change?
Respiration is a chemical change as new substances like carbon dioxide and water are formed. Also there is change in the mass as glucose is oxidised by oxygen and heat is released. This change is permanent. All these factors conclude that respiration is a chemical change.
Is burning of candle a chemical change?
The chemical change is combustion of fuel in presence of oxygen. This leads to the production and emission of carbon dioxide from the flame. 3. The burning of a candle is only a chemical change.
Which one is not a chemical change?
Sublimation is a process in which the substance's phase transition occurs directly from solid to the gaseous phase. Hence, it is physical change not chemical. >
Which of the following are physical changes?
(a)Freezing of water to ice and evaporation of water are physical changes. (b)Burning of a candle is both a physical and a chemical change. (c)Burning of paper is a chemical change. (d)Cutting of a cloth piece is a physical change, though it cannot be reversed.
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.
Which process is a physical change?
Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting.
Which of the following is not an example of a chemical change?
The correct answer is option 1 i.e Changing of water to water vapour. Changing water to water vapour is NOT an example of chemical change.
How do plants make food grade 3?
Their roots take up water and minerals from the ground and their leaves absorb a gas called carbon dioxide (CO2) from the air. They convert these ingredients into food by using energy from sunlight. This process is called photosynthesis, which means 'making out of light'. The foods are called glucose and starch.
What is photosynthesis for class 8th?
Photosynthesis is a process by which phototrophs convert light energy into chemical energy, which is later used to fuel cellular activities. The chemical energy is stored in the form of sugars, which are created from water and carbon dioxide.
Is photosynthesis a double replacement reaction?
1 Answer. Photosynthesis is a single displacement reaction.
Is photosynthesis anabolic or catabolic?
Anabolism Anabolism: Photosynthesis Photosynthesis is an anabolic process during which plants use energy from sunlight to convert carbon dioxide gas and water into sugar molecules.