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Polar Molecule
Polar Molecule
Water is a polar molecule (h2o). Molecules of H2O have electrically charged areas:
Hydrogen is positive (+)
Oxygen is negative (-)
Adhesion
Adhesion
When water molecules stick to other substances (glass, plastic, etc)
Cohesion
Cohesion
When water molecules combine with other water molecules
Surface Tension
Surface Tension
When molecules of water join together, a "skin-type" layer is formed all around the water. This is known as surface tension. Surface tension creates a "surface" for insects to walk on and is what gives a drop of water its unique bubble shape.
Capillary Action
Capillary Action
Capillary action is the ability of a liquid to flow against the force of gravity.
Ex: water moving up a straw, dri-fit shirts
Specific Heat
Specific Heat
The amount of heat (energy) required to raise the temperature of 1 gram of a substance by 1 degree C.
Solution
Solution
A mixture of two or more substances.
Solute
Solute
The substance in a solution that gets dissolved
Solvent
Solvent
The substance that does the dissolving
Universal solvent
Universal solvent
Water is called the "universal solvent" because it dissolves more substances than any other liquid. It means that wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients.
Triple beam balance
Triple beam balance
The triple beam balance is an instrument used to measure mass very precisely.
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