Can soap propel a leaf boat? (2 Truths & Trash)

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Here's a list of questions answered in this video:
1. Can you boil hot water with ice?
2. Does tonic water that contains Quinine glow under a black light?
3. Does a shot glass prevent water from spilling out of a water bottle?
4. Does a cold tennis ball bounce higher than a warm tennis ball?
5. Does a tangerine with a peel float, while a tangerine without a peel sinks?
6. Does a shriveled up dry pine cone expand when placed in water?
7. Can soap propel a leaf across the surface of water?
8. Does maple syrup make a squishy egg after you soak the egg in vinegar?
9. Are candle flames hollow?