The dynamic interactions of water molecules. Strong linkages—called covalent bonds—hold together the hydrogen (white) and oxygen (red) atoms of individual H2O molecules. Covalent bonds occur when two atoms—in this case oxygen and hydrogen—share electrons with each other.

Hydrogen bonds are attractions of electrostatic force caused by the difference in charge between slightly positive hydrogen ions and other, slightly negative ions. The attraction between individual water molecules creates a bond known as a hydrogen bond.

Strongly polar substances (things with positive and/or negative charges) easily attract water molecules. The water molecules surround the charged solute; positive hydrogens close to negative charges and negative oxygens close to positive charges on the solute molecule.

Cohesion refers to the attraction of molecules for other molecules of the same kind, and water molecules have strong cohesive forces thanks to their ability to form hydrogen bonds with one another.

Water molecules are attracted to each other. Water molecules have a polar arrangement of oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge. This allows the water molecule to become attracted to many other different types of molecules.

Answer: Compounds are combination of two or more elements like water which is the combination of hydrogen and oxygen.

A good rule of thumb is to check for cloudiness. One way to tell if water is contaminated is to look for turbidity, or cloudiness. While cloudy water isn’t necessarily dangerous to your health, it could signal the presence of unsafe pathogens or chemicals.

Mercury, lead, copper, chromium, cadmium, and aluminum all pollute tap water. If taken excessively for a long time, these heavy metals found in tap water can harm your health. Aluminum, for example, can increase risks of the following health conditions: brain deformities.

The U.S. Food and Drug Administration (FDA), which regulates the bottled water industry, does not require a shelf life for bottled water. Bottled water can be used indefinitely if stored properly, but we recommend no more than two years for non-carbonated water, and one year for sparkling water.

It’s important to drink enough water during the day, however, it can be disruptive if you drink directly before bed. Avoid drinking water or any other fluids at least two hours before sleeping to prevent waking up at night.

“If you left it in a car for weeks at a time, then there’s a small chance that some chemicals like BPA could leach into the water but it’s a very small probability,” Williams said. The biggest risk is drinking from the bottle, letting it sit in the hot car, then drinking it again.

“if you’re leaving a bottle of water in a car for a day, there’s really no risk of any chemicals leaching into the water,” Williams said. “If you left it in a car for weeks at a time, then there’s a small chance that some chemicals like BEP could leach into the water but it’s a very small probability,” Williams said.

In today’s Your Health First, a study from Arizona State University says that leaving your water bottle in your car for too long with just little exposure to heat and later drinking from it could cause breast cancer. …

Unopened bottled water products can usually be stored indefinitely, provided the bottles are kept in the proper environment. In addition, don’t store bottled water in a garage or storage shed where it could be exposed to chemical fumes, excessive heat or sunlight.

Store at least 1 gallon of water per person per day for 3 days for drinking and sanitation. Try to store a 2-week supply if possible. Consider storing more water than this for hot climates, pregnant women, and persons who are sick. Observe the expiration date for store-bought water.

Don’t store bottled water in a garage, storage shed, or other location which will expose the water to temperature extremes. Don’t store bottled water in direct sunlight for an extended period of time.

IBWA advises consumers to store bottled water at room temperature or cooler, out of direct sunlight and away from solvents and chemicals such as gasoline, paint thinners, household cleaners, and dry cleaning chemicals.

Summary. Water molecules are polar, so they form hydrogen bonds. This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion and density.

It is polar, allowing for the formation of hydrogen bonds, which allow ions and other polar molecules to dissolve in water. Water’s cohesive forces allow for the property of surface tension. All of these unique properties of water are important in the chemistry of living organisms.

Cohesion allows for the development of surface tension, the capacity of a substance to withstand being ruptured when placed under tension or stress. This is also why water forms droplets when placed on a dry surface rather than being flattened out by gravity.

Cohesion

Unique properties of water

• Water is polar.
• Water is an excellent solvent.
• Water has high heat capacity.
• Water has high heat of vaporization.
• Water has cohesive and adhesive properties.
• Water is less dense as a solid than as a liquid.

Physical characteristics of water quality

• Color – pure water is colorless; colored water can indicate pollution.
• Turbidity – pure water is clear and does not absorb light.
• Taste and odor – pure water is always tasteless and odorless.

Quality drinking water should have a balanced pH level, be contaminant-free, rich with healthy, naturally occurring minerals. What determines good drinking water quality? For starters, effective sanitation practices are necessary to produce safe, clean drinking water.

In its pure form, water is a colorless, odorless liquid that has a specific gravity, or density, of 1 gram per milliliter at 39.2 degrees Fahrenheit (4 degrees Celsius). If water is not pure, several of its properties change, including its freezing point,boiling point and conductivity.

The four life supporting properties of water are high specific heat capacity, density, polarity and hydrogen bonding.

Discussion of the properties of water that make it essential to life as we know it: polarity, “universal” solvent, high heat capacity, high heat of vaporization, cohesion, adhesion and lower density when frozen.

Hydrogen Bonding. Hydrogen bonding is a special type of dipole-dipole attraction between molecules, not a covalent bond to a hydrogen atom. It results from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as a N, O, or F atom and another very electronegative atom.

Water has several important physical properties. Given the low molar mass of its constituent molecules, water has unusually large values of viscosity, surface tension, heat of vaporization, and entropy of vaporization, all of which can be ascribed to the extensive hydrogen bonding interactions present in liquid water.

The most obvious physical properties of a liquid are its retention of volume and its conformation to the shape of its container. When a liquid substance is poured into a vessel, it takes the shape of the vessel, and, as long as the substance stays in the liquid state, it will remain inside the vessel.

Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form.

Condensation

Evaporation, Condensation, Freezing, Melting, Sublimation and Deposition.

Sublimation. Sublimation. Some solids turn directly into gases when they are heated, without passing through a liquid state. This is known as sublimation, but it only happens with a few solids under special conditions.