Sunday, August 14, 2011

Biology help Questions?

The _________ of water molecules allows them to hydrogen bond with each other. Water molecules hydrogen bond with polar molecules, which are ____________ (water-loving) substances. Polarity causes water to repel oil and other non-polar substances, which are ___________ (water dreading). __________ is a measure of the molecular motion of a given substance. Liquid water changes its temperature more slowly than air because of the great amount of heat required to break the high number of ___________ bonds between water molecules; this property helps stabilize temperature in aquatic habitats and cells. When large energy inputs increase molecular motion to the point where hydrogen bonds stay broken, individual molecules are released from the water surface. This process is known as __________. Below 0 degrees celsius, water molecules become locked in the lattlicelike bonding pattern of __________, which is less dense than water. Collective hydrogen bonding creates a high tension on surface water molecules resultin in ____________, the property of water that explains how long, narrow water columns rise to the tops of tall trees. Water is an excellent ___________ in which ions and polar molecules readily dissolve. Substances dissolved in water are known as ___________. A substance is ___________ in water when spheres of ________ from around its individual ions or molecules. Fill in the blanks.

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