Yes, the water has turned into ice. It was a liquid but it is now a solid. You can change it back again by melting it.
The thin plastic cup is a poor insulator.
metal cup because it has insulation
Froze is the past tense of freeze. An example sentence would be: She left her cup in the snow and it froze.
Yes it will .
no
Tap water out of a paper cup uses the fewest resources from the environment tap water out of a plastic cup.
The cold lemonade cool the temperature of the plastic cup including the outer side of it. Thereby lowering the amount of water the air can contain, resulting in water condensating - attaching to the cup.
The cup may be damaged.
Glass would be healthier
You're talking about holding the temperature of the water, right? As far as containing the liquid, they're about equal...but a styrofoam or double-wall plastic cup would hold temp better than a glass cup which would work better than a single-wall plastic cup.
That depends on how hot the water is in the cup. Use the thermometer to measure it and see.
it expands until it no longer has space and it starts to create cracks in the plastic cup