Why do we have more oxygen than hydrogen?
Oxygen has a higher electronegativity ( 3.5) than Hydrogen (2.2) so the electrons are drawn more to the Oxygen than Hydrogen.
What is more in water hydrogen or oxygen?
A molecule is made by two or more atoms. So there are twice as much ATOMS of hydrogen than oxygen in any given amount of water.
How are the elements that make up water hydrogen and oxygen different from water itself?
The difference is due to the fact that one water molecule has two hydrogen atoms to one oxygen atom, as explained above. This means it takes two water molecules (2 H2O) to make one oxygen molecule (O2). At the same time, however, two molecules of water (2 H2O) can make two molecules of hydrogen (2 H2).
What happens between hydrogen and oxygen in a water molecule?
Covalent bonds occur when two atoms—in this case oxygen and hydrogen—share electrons with each other. Because oxygen and hydrogen attract the shared electrons unequally, each end of the V-shaped H2O molecule adopts a slightly different charge.
Why does oxygen have a greater electronegativity than hydrogen?
Oxygen is more electronegative because of a larger positive charge in the nucleus with very little electron shielding effects. More electrons would repel electrons, and more protons will attract electrons. This is the way.
Why is the oxygen more negative than the hydrogens in water?
Unequal sharing of electrons makes water a polar molecule. Tell students that the oxygen atom attracts electrons a little more strongly than hydrogen does. This makes the oxygen end of the molecule slightly negative. Since the electrons are not near the hydrogen end as much, that end is slightly positive.
Why does water have more hydrogen?
Multiple hydrogen bonds occur simultaneously in water because of its bent shape and the presence of two hydrogen atoms per molecule. In the liquid state, the hydrogen bonds of water can break and reform as the molecules flow from one place to another. When water is cooled, the molecules begin to slow down.
Why are hydrogen and oxygen gases but water is a liquid?
Water molecules are strongly attracted to each other, so they remain condensed (that is, a liquid, and not a gas) at higher temperatures. Dihydrogen and dioxygen have no strong attractive forces to hold the molecules together, so they exist as gases at room temperature and pressure (that is, in our everyday lives).
Why do water and hydrogen have different properties?
Water (H2O) and hydrogen peroxide (H2O2) both consist of hydrogen and oxygen atoms. Even though they are both made up of hydrogen and oxygen atoms, water and hydrogen peroxide habe different properties because they are made up of different combinations of the elements’ atoms.
Why do hydrogen bonds form between water molecules?
In water molecules the oxygen atom attracts the negatively charged electrons more strongly than the hydrogen. This gives water an asymmetrical distribution of charge so that it is a polar molecule. Because the water molecules are small, many of them can surround one molecule of the solute and form hydrogen bonds.
What is the most important role of hydrogen bonding between water molecules?
Water molecules align so the hydrogen on one molecule will face the oxygen on another molecule. This gives water a greater viscosity and also allows water to dissolve other molecules that have either a slightly positive or negative charge.