1. A dry, empty bottle is placed in an ice bath. After the air inside the bottle is cooled off, a balloon is placed over the opening. The bottle with the balloon is then placed in very hot water and the balloon inflated. Why
did the balloon inflate?

Draw metallic bonding if two copper

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.