Properties Of Water
What is water?
Water is made of two parts (atoms) hydrogen, one part oxygen H2O.
An atom is the smallest unit of matter that retains its properties.
Atoms consists of protons, electrons, and neutrons.
Protons have a positive charge
Electrons have a negative charge
Neutrons are neutrally charged (no charge)
Atoms are usually neutrally charged because the number of protons and electrons are even, and unevenly charged atoms are called ions.
When two hydrogen atoms and one oxygen atom combine to form a water molecule, each hydrogen shares its single electron with the oxygen and the oxygen shares one of its electrons are hydrogen.
Water is a Polar Molecule
A polar molecule is shared electrons that spend more time around the oxygen than the hydrogen and the hydrogen end carries a slightly positive charge (Polar Molecule) and the oxygen carries slightly negative charge.
Hydrogen Bonding - the weak attraction between the weakly positive hydrogen atoms and the wealy negative oxygen atoms of a different molecule.
1) Water is a universal solvent-- water is able to dissolve substances.
2) Cohesion - water molecules attracted to each other.
3) Surface tension - attractions of water molecules to themselves to create a "film" on the surface of water.
4) Adhesion - water can attract to other materials.
5) High Heat Vaporization - hydrogen bonds must be broken so water can absorb a lot of heat without changing phase.
6) High Latent of Fusion - lot of heat released when water freezes and lots of heat is absorbed when ice melts.
7) Water has a High Specific Heat - water can absorb a large amount of heat before it gets too hot.
Temperature - is a substance in a measure of the average Kinetic Energy of the atoms and molecules-- measured in degrees (celcius - science)
Heat - a measure of the total kinetic energy of the atoms and molecules.
What is Density?
Density describes the degree of compactness.
Density = mass/volume
Water is made of two parts (atoms) hydrogen, one part oxygen H2O.
An atom is the smallest unit of matter that retains its properties.
Atoms consists of protons, electrons, and neutrons.
Protons have a positive charge
Electrons have a negative charge
Neutrons are neutrally charged (no charge)
Atoms are usually neutrally charged because the number of protons and electrons are even, and unevenly charged atoms are called ions.
When two hydrogen atoms and one oxygen atom combine to form a water molecule, each hydrogen shares its single electron with the oxygen and the oxygen shares one of its electrons are hydrogen.
Water is a Polar Molecule
A polar molecule is shared electrons that spend more time around the oxygen than the hydrogen and the hydrogen end carries a slightly positive charge (Polar Molecule) and the oxygen carries slightly negative charge.
Hydrogen Bonding - the weak attraction between the weakly positive hydrogen atoms and the wealy negative oxygen atoms of a different molecule.
1) Water is a universal solvent-- water is able to dissolve substances.
2) Cohesion - water molecules attracted to each other.
3) Surface tension - attractions of water molecules to themselves to create a "film" on the surface of water.
4) Adhesion - water can attract to other materials.
5) High Heat Vaporization - hydrogen bonds must be broken so water can absorb a lot of heat without changing phase.
6) High Latent of Fusion - lot of heat released when water freezes and lots of heat is absorbed when ice melts.
7) Water has a High Specific Heat - water can absorb a large amount of heat before it gets too hot.
Temperature - is a substance in a measure of the average Kinetic Energy of the atoms and molecules-- measured in degrees (celcius - science)
Heat - a measure of the total kinetic energy of the atoms and molecules.
What is Density?
Density describes the degree of compactness.
Density = mass/volume