The water on the outside of the glass is formed by the moisture in the air condensing on the cold surface of the glass. It is condensation.
a flask
First of all, the 'sweat' on a cold drink container is condensation. Condensation occurs when there is sufficient humidity in the air, and that air is cooled below the dew point. This is exactly what happens with a cold drink container in the summer. In summer there is usually fairly high humidity, but even more important, that moisture is warm, and is easily cooled (by the cold drink container) to a temperature that is below the dew point, and . . . . . water droplets begin to collect on the container's surface. Once the container warms to a temperature above the dew point, you will see the 'sweat' is gone.
The soft drink assumed the shape of the container.
Yes, yes it is.
A bottle
freeze it, refrigerator it, evaporate it then when wanted to drink add water, put in a sealed container
use a metal container to keep a drink very full
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A cambro is an insulated container for keeping food and drink hot.
A metal container will least insulate a cold drink compared to other materials such as plastic or glass because metal has higher thermal conductivity, meaning it allows heat to transfer more quickly between the drink and the external environment. This can lead to faster heat exchange and warming of the cold drink inside the metal container.
If you don't know how much alcohol is in a drink, you can look on the container. It will give a percentage or strength of alcohol on the container.
Carbon dioxide will dissolve better in a carbonated soft drink when the pressure is released, such as when opening the container. This allows the gas to escape from the liquid, resulting in less carbonation. Heating the container can also cause the gas to escape, while cooling can result in the gas staying dissolved in the liquid.