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Respiration and burning are considered chemical changes because they involve the transformation of substances at a molecular level. In respiration, organic molecules like glucose are broken down in the presence of oxygen to produce carbon dioxide and water, releasing energy. Similarly, burning involves the combustion of a substance, typically in oxygen, resulting in new products such as carbon dioxide and water, along with the release of heat and light. Both processes alter the chemical composition of the original materials, signifying a change in their chemical properties.
What else can I help you with?
Why is a burning candel a chemical change and not a physical changes?
Burning is a chemical reaction with oxygen (oxidation).
What are the physical changes of a plastic bottle?
Yes, burning (oxidation) is chemical change.
Is burning newspaper a physical change?
Yes, burning newspaper is a chemical change because it undergoes a chemical reaction (combustion) that changes its chemical composition. The heat and flame produced during burning are evidence of this chemical reaction taking place.
What type of change such as burning or rusting in which the identity of the substance changes?
a chemical change
Why is the burning of charcoal in a grill is a chemical change?
When anything is burned a chemical change occurs. The chemical composition of charcoal changes.
Why is burning of gas considered a chemical change?
All burning reactions involve chemical reactions (chemical changes).
Is burning a match a physical change?
Yes, burning a match is considered a chemical change because it involves a chemical reaction that changes the composition of the matchstick and produces new substances like ash, carbon dioxide, and water vapor. This is different from physical changes, which do not alter the chemical composition of a substance.
Why is a burning candel a chemical change and not a physical changes?
Burning is a chemical reaction with oxygen (oxidation).
What are chemical changes in matter?
rusting, burning, polymerizing,
What are the physical changes of a plastic bottle?
Yes, burning (oxidation) is chemical change.
What chemical changes occur during the digestive process?
Cellular respiration
Is burning newspaper a physical change?
Yes, burning newspaper is a chemical change because it undergoes a chemical reaction (combustion) that changes its chemical composition. The heat and flame produced during burning are evidence of this chemical reaction taking place.
What type of change such as burning or rusting in which the identity of the substance changes?
a chemical change
What are the steps to prove that a burning of a candle is physical as well as a chemical change?
To prove that the burning of a candle is a physical and chemical change, you can observe the physical changes such as the melting of the wax and the formation of soot. Additionally, you can analyze the chemical changes by noting the production of carbon dioxide and water vapor during the combustion process. By observing both physical and chemical changes, you can demonstrate that burning a candle involves both types of transformations.
How is burning sugar different from other chemical changes?
Why is it different? No, it isn't. Burning sugar is a combustion process.
Is magnesium burning a physical change?
No, magnesium burning is a chemical change because the magnesium undergoes a chemical reaction with oxygen to form magnesium oxide. Physical changes do not alter the chemical composition of a substance, whereas chemical changes do.
Is burning of coal a physical change?
Burning of coal is a chemical change, not a physical change. During the burning process, the chemical composition of coal changes as it reacts with oxygen to produce heat, light, and ash.
