Notes
What causes water to behave differently from other liquids?
polarity
Tendency of water molecules to stick to each other due to hydrogen bonding?
Cohesion
The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
Photosynthesis
A property of water molecules where the oxygen atom has a partial negative charge and the hydrogen atoms have a partial positive charge.
Polarity
How is water moved through the earth and the earths atmosphere?
water cycle or hydrologic cycle
What does water expand as?
a solid
A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. Water is a simple molecule.
Molecule
The tendency of water molecules to stick to other substances due to polarity.
Adhesion
The ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity.
Capillary Action
How are cohesion and adhesion the same?
attractive tendencies
Differences in what make water a polar molecule?
electronegativity
Characteristics of a substance related to its response to heat.
Thermal Properties
Bonds formed between water molecules due to their polarity, responsible for many of water's unique properties.
Hydrogen Bonds
Substances present in another substance, which are not intrinsically part of the substance. Impurities can affect surface tension.
Impurities
Water on the ground seeping into soil
Infiltration
In the water molecule the O in H2O has what kind of charge?
Negative
A set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
Cellular Respiration
Processes that involve rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear5 reaction. Water facilitates chemical reactions within cells.
Chemical Reactions
The tendency of a liquid surface to resist external force, caused by cohesive forces between liquid molecules at the surface.
Surface Tension
Water that runs along the lands surface
Runoff
In the water molecule the H's in H2O has what kind of charge?
Positive
Atoms or molecules that have gained or lost one or more electrons, resulting in a net electrical charge. The polarity of water molecules allows them to bond with both positive and negative ions.
Ions
Substances that provide nourishment essential for the maintenance of life and for growth. Water's ability to dissolve nutrients allows for their transport throughout the body.
Nutrients
Qualities or characteristics belonging to something. Water displays unique properties due to its structure and chemical composition.
Properties
Saturated area below the water table
Aquifer