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it's the physical and chemical characteristics of oxygen!
Chemical
It is a chemical change.
physical change
Chemical
That would be a chemical change.
This is a chemical change.
No,They are always producing Oxygen.No. The more leaves the more oxygen.
Yes it is chemical because the sun is producing food by causing chemicals and substances
When you combust hydrogen in air, the hydrogen will combine with oxygen to form water. Therefore, the hydrogen and oxygen are undergoing a chemical change to become bonded together producing H2O: 2H2 + O2 → 2H2O + Heat
Physical
Physical because it is still Oxygen. A chemical change results in a chemical equation and thus a new substance. No new substance = no chemical change. Liquefaction is a physical property.
it's the physical and chemical characteristics of oxygen!
Oxygen is a substance, an element out of the periodic system.
If something reacts with oxygen that is a description of a chemical property.
Its a chemical change. Leaves breathe in carbon dioxide. They use it to carry out the process of photosynthesis that is preparation of food for growth. Chemical changes involving salts, water, carbon dioxide take place in the presence of sunlight that results in the liberation of oxygen into the atmosphere. At night however in the absence of sunlight it breathes in oxygen to prepare food, since photosynthesis is not possible due to absence of sunlight.
Oxidation is a chemical process.