Describe hydrogen bonding in liquid, solid and gas forms of water.
1) In liquid, hydrogen bonds are weak, so water is the shape of the container. The molecules have no order, and very transient h bonds.
2) In solid, the low temperature causes very low kinetic energy, so the h bonds are strong enough to hold molecules in place. thThe average distance between each water molecule is larger, so ice is less dense than liquid water.
3) gas - less order, and has very few h bonds because the molecules are moving so fast that they can't get close enough to each other to h bond.