At a pressure of 1 atm, water and iodine have stable solid, liquid, and gaseous states.
At a pressure of 1 atm, carbon dioxide has no stable liquid state.
Carbon dioxide forms a liquid at high pressures.
The solid remains solid.
The most important liquid on the planet is water.
It fills our bodies of water.
In its solid form, it caps our mountains, and in its gaseous form, it humidifies our air.
We drink water, sweat water, and excrete bodily waste in the water.
Life is not possible without water in most places on Earth.
The European Space Agency's evidence for the existence of water on Mars has fueled hopes of finding life on the red planet.
Because we take water for presence of liquid water under the ice, this familiar substance has many remarkable properties.
Liquids, solids, and intermolecular forces are unique to water.
It is a liq uid at room temperature and has a low molar mass.
There is no other substance of similar mass that is close to being a liquid at room temperature.
H bonds look at its structure.
A molecule has a significant dipole moment.
H bonds allow a water molecule to form strong hydrogen bonds with four other water molecule, resulting in a relatively high boiling point.
The main solvent within liv is water, which can form hydrogen bonds with organisms and transport important compounds.
Water is the main solvent in our environment, allowing aquatic animals to survive by breathing dissolved oxygen and allowing aquatic plants to survive by using dissolved carbon dioxide for photosynthesis.
The climate of coastal cities can be affected by the high specific heat capacity of water.
In San Francisco, the daily temperature can be less than 10 degrees.
Two-thirds of the planet is covered by water.
Without water, the daily temperature fluctuations on our planet might be similar to those on Mars, where temperatures fluctuate between midday and early morning.
Our planet's smaller daily fluctuations are largely due to the presence of water on Earth and water's high specific heat capacity.
The way water freezes is unique.
Ice floats because it is less dense than liquid water.
There are significant consequences to this seemingly trivial property.
The water in the lake is protected from further freezing by the frozen layer of ice at the lake's surface.
If the ice layer sank, it would kill the bottom-dwelling aquatic life and allow the lake to freeze solid, eliminating virtually all life in the lake.
Most organisms do not survive freezing because of the expansion of water.
When the water within a cell is frozen, it expands and breaks the cell, like a pipe bursting.
High water content foods do not survive freezing very well.
When you thaw it, it will be limp and damaged.
Foods are frozen almost instantly, which prevents water from entering their preferred structure.
When lettuce is frozen, the water in its cells expands.
Water quality is important to human health.
Poor water quality is the cause of many human dis eases.
There are pollutants from the water.
Chemicals enter drinking water supplies as a result of industrial dumping, pesticide use and household dumping.
There are organic compounds, such as carbon tetrachloride and dioxin, and inorganic elements, such as mercury, lead, and nitrates.
Chemical contaminants are usually not eliminated through boiling.
Under the Safe Drinking Water Act of 1974, the EPA sets standards for the maximum level of biological and chemical contaminants in water.
Water providers that serve more than 25 people must periodically test the water they deliver.
If levels exceed the standards set by the EPA, the water provider must take appropriate measures to remove the water supplies that are critical to contaminant from the water.
The water comes from human health.
Over a lifetime, diseases are caused by biological contaminants.
It is not safe to drink for a short period of time.