Respuesta :
Answer:
The answer to your question is letter c) Sugar burns in air to form water and carbon dioxide.
Explanation:
Exist two kinds of phenomena: physical and chemical
physical phenomena are when matter only changes its physical state, like evaporation, condensation, sublimation, etc.
chemical phenomena are when matter changes, react and form a new compound.
a) Iodine (a purple solid) becomes a purple gas. This is a physical change, sublimation, this answer is wrong.
b) Titanium is less dense than iron. Density is a physical property of matter, this answer is incorrect.
c) Sugar burns in air to form water and carbon dioxide. Sugar in transform into water and carbon dioxide, this is the right answer.
d) Water boils at 100 ∘C. Evaporation is a physical change, the answer is wrong.
The statement describing the chemical property has been the burning of sugar in air to form carbon dioxide and water. Thus, option C is correct.
The property of the element has been given as the physical and chemical property.
The physical property has been defined as the one in which the chemical composition has not been changed. It has been based on the appearance of the compound.
The chemical property has been the reactivity of the compound that results in the change in the chemical composition with the formation of new products.
Chemical property
The following changes have been classified as:
- Iodine becomes purple:
It has been the appearance and no change in the chemical composition. Thus, it is a physical property.
- Titanium, less dense than iron:
It has been based on the comparative density. There has been no reaction and change in chemical composition. Thus, it is a physical property.
- Sugar burns in air
The burning of sugar results in the change in the chemical composition with the formation of new product. Thus, it has been a chemical property.
- Boiling of water
The boiling and freezing results in the change in state of matter. There has been no change in the chemical composition, Thus, it has been a physical change.
Hence, the statement describing the chemical property has been the burning of sugar in air to form carbon dioxide and water. Thus, option C is correct.
Learn more about chemical property, here:
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