Heat water in a teakettle on the stove until it begins to boil. Heat enough water to partially fill your mixing bowl. While the water in the kettle heats, place the small cup inside the mixing bowl. Choose a heavy cup so it won't float away when you
add water to the container. After the water boils, turn off the stove's burner. Use an oven mitt to hold the teakettie, and
carefully pour the hot water into the mixing bowl. Be sure that no water goes into the small cup. Place the tea kettle back
on the stove to cool turn off all burners)

What change did you observe in the hot water when you poured it in the mixing bowl?