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georgesarkes12
25.01.2021 •
Chemistry
Which of the changes are chemical changes?
sugar is dissolved in soda
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Ответ:
Soda is carbonated water - it has carbon dioxide dissolved under high pressure. Carbon dioxide is a gas that would like to escape. Shaking the bottle of soda, for example, provides a suitable mechanism to allow release of the gas.
Adding sugar also provides a mechanism for this to occur through nucleation. The sugar crystals give the carbon dioxide a surface via which to escape the solution. This is not a chemical reaction per se, but a physical reaction. It is essentially the same process as the coke-mentos reaction. Sugar crystals are great for this, as they have a rough surface and therefor a very high surface area available.
Ответ:
5400 cm
Explanation: