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.
Why is photosynthesis is a chemical reaction?
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. Sunlight is the primary source of energy on the surface of Earth.
What chemical change occurs in photosynthesis?
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.
Why respiration is 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.
Why photosynthesis is regarded as a chemical change Give 2 reasons write chemical equation?
The involved chemical reaction during photosynthesis is the combination of water and carbon dioxide to produce glucose and oxygen. ,As new chemical species are produced, thus, photosynthesis is simply a chemical transition. The equation for the same is Water + Carbon dioxide → Oxygen + Glucose.
Which statement about photosynthesis is correct?
Answer: Plants get the energy they need for photosynthesis from sunlight.
Is turning on a light a chemical change?
This is a physical change because in this process, electric energy is being converted into heat & light energy only . There is no change in chemical composition in this process.
What chemical changes occur in plants?
Photosynthesis and respiration are chemical changes which convert light, water and carbon dioxide into oxygen and glucose, which is then used as energy by the plant. We call this a chemical change because the composition of the initial substances is changed during the process.
Is breathing a chemical reaction?
Breathing is a chemical change as during breathing oxygen is taken inside and carbon dioxide and water are released.
Is burning of candle a chemical change?
When candle burns, wax in candle converts from solid into liquid. This is a physical change (as it is a change in state of matter and can be reversed) However, wax near the flame burns and convert into carbon dioxide. This carbon can’t be again converted into wax , so this is a chemical change.
Is boiling water a chemical change?
Research shows that students frequently use the term chemical change to describe changes in physical state. Freezing and boiling are considered to be examples of chemical reactions.
What evidence proves photosynthesis is a chemical change?
Photosynthesis is a chemical reaction that occurs in plants by using radiant energy from sunlight. In this chemical reaction, carbon dioxide from the atmosphere and water from the soil are combined to produce sugar (glucose) that contains stored chemical energy.
How would you prove that the process of photosynthesis is a chemical change?
Photosynthesis is described as a chemical reaction as it is a process that rearranges the ionic/molecular structure of certain substance(s) to make another substance. In this case carbon dioxide’s and water’s molecular structure is rearranged to make glucose and oxygen, thereby making it a chemical reaction.
Is photosynthesis biological or chemical process?
Simply defined, photosynthesis is the biological process of converting light energy into chemical energy (i.e., reduced hydrocarbons).
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.
Whats the process of photosynthesis?
photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
Which is an example of chemical change?
Burning, cooking, rusting and rotting are examples of chemical changes.
What are five kinds of chemical changes?
This becomes much easier for students to do when they learn the pattern of 5 basic categories of chemical reactions: synthesis, decomposition, single replacement, double replacement, and combustion.
How do you know if its a physical or chemical change?
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
Is photosynthesis biological or chemical process?
Simply defined, photosynthesis is the biological process of converting light energy into chemical energy (i.e., reduced hydrocarbons).
Does photosynthesis contain chemicals?
Carbon, hydrogen, and oxygen are the chemical ingredients necessary for photosynthesis to take place. Hydrogen and oxygen both come from the water in the hydrosphere. Carbon and oxygen come from the carbon dioxide that animals and humans breathe into the atmosphere.
How would you prove that the process of photosynthesis is a chemical change?
Photosynthesis is described as a chemical reaction as it is a process that rearranges the ionic/molecular structure of certain substance(s) to make another substance. In this case carbon dioxide’s and water’s molecular structure is rearranged to make glucose and oxygen, thereby making it a chemical reaction.
