0
What else can I help you with?
Why does the oxygen atom in a water molecule have a negative change?
The oxygen atom in a water molecule has a partially negative charge because oxygen is more electronegative than hydrogen. This causes the electrons in the covalent bonds to be pulled closer to the oxygen atom, giving it a partial negative charge.
What happens to the polarity of oxygen atoms as they transform from molecular oxygen into water molecules?
In the bond in molecular oxygen, the electrons are pulled equally towards each element, as they are the same element and so have the same electronegativity. In water, however, the bonds are between hydrogen and oxygen. The nucleus of oxygen has eight times the charge of the nucleus of hydrogen, and so attracts the electrons more strongly than hydrogen does. It does not attract eight times as strongly as hydrogen as the extra electron shell repels the electrons in the bond more than hydrogen's nonexistent shells (its only electron is in the bond). It can therefore be said that oxygen is more electronegative than hydrogen. As the oxygen attracts the electrons more strongly than the hydrogen, it gains a partially negative charge. Similarly, the hydrogen gains a partially positive charge. This polarity is responsible for the interesting properties of water, including its ability to stay liquid at room temperature, its low density as a solid and its ability to climb up a narrow capillary tube without any force applied to it.
Is H2O covalent compound?
Yes. Water, or H2O, has covalent bonds.Related Information:Actually, they are polar covalent bonds. That means that the two hydrogen atoms form two covalent bonds with the one oxygen atom, causing it to be polar. This is because most of the electrons are pulled toward the hydrogen atoms, this will cause one end (Oxygen) of the molecule to be positively charged, and the other ends (Hydrogen) to be negatively charged. This is why water is known for it's hydrogen covalent bonds. That means that when one molecule of water is exposed to another molecule of water the negative ends of one are attracted to the positive end of the other (opposites attract). This polar attraction is what causes water have surface tension.
What bond occurs when a pair of electrons is unequally shared between two atoms?
In H2O the electrons are shared by the oxygen atom and two hydrogen atoms. Although there are two hydrogen atoms, the electro-negativity (or ability to attract electrons) of the oxygen is greater than the hydrogens, therefore the electrons are pulled greater towards the oxygen resulting in the oxygen becoming "negatively charged" this results in the molecule becoming what is known as a "dipolar molecule". This is what causes water to be attracted to each other as each molecule has a positive and negative pole. Answered by Mason Rawling-Jones (currently 15).
How does a hydrogen bond compare to a covalent bond?
The short answer, without too much research or effort on my part, is that hydrogen bonds are weaker. The are due to the attraction of hydrogen to other elements (such as oxygen) that have lone pairs swimming around. Covalent bonds are due to electronic effects, and as such are stronger.
What happens to water molecules as a result of the actions of the photosystem II enzyme?
Photosystem II enzyme splits water molecules into oxygen, electrons, and protons. This process is known as photolysis, and the oxygen is released as a byproduct while the electrons are transferred through the electron transport chain to generate ATP and NADPH for the light-dependent reactions of photosynthesis.
Why does the oxygen atom in a water molecule have a negative change?
The oxygen atom in a water molecule has a partially negative charge because oxygen is more electronegative than hydrogen. This causes the electrons in the covalent bonds to be pulled closer to the oxygen atom, giving it a partial negative charge.
What happens to the polarity of oxygen atoms as they transform from molecular oxygen into water molecules?
In the bond in molecular oxygen, the electrons are pulled equally towards each element, as they are the same element and so have the same electronegativity. In water, however, the bonds are between hydrogen and oxygen. The nucleus of oxygen has eight times the charge of the nucleus of hydrogen, and so attracts the electrons more strongly than hydrogen does. It does not attract eight times as strongly as hydrogen as the extra electron shell repels the electrons in the bond more than hydrogen's nonexistent shells (its only electron is in the bond). It can therefore be said that oxygen is more electronegative than hydrogen. As the oxygen attracts the electrons more strongly than the hydrogen, it gains a partially negative charge. Similarly, the hydrogen gains a partially positive charge. This polarity is responsible for the interesting properties of water, including its ability to stay liquid at room temperature, its low density as a solid and its ability to climb up a narrow capillary tube without any force applied to it.
What is the molecular composition of water?
H20 is the molecular composition of water. Two hydrogen atoms and one oxygen atom. The hydrogen atoms are pulled to the oxygen atom through forces called hydrogen bonding.
Why do you die if you have lack of oxygen?
The stage in cellular respiration that supplies most of the energy for our cells involves electrons "falling" to different "stages". The electrons fall because they are pulled that way by oxygen, which has a very high attraction to electrons. As they fall, they supply energy to proteins that "pump" hydrogen across a membrane in our mitochondria, creating a "dam" of hydrogen ions. These ions will try to "flood" out of the "dam", doing so by going through a complex that acts as a turbine, supplying energy to cells. So, basically, oxygen is needed for the electrons to fall to start the energy-producing process. So, oxygen is needed is producing energy- if we run out of oxygen, we run out of energy.
Is H2O covalent compound?
Yes. Water, or H2O, has covalent bonds.Related Information:Actually, they are polar covalent bonds. That means that the two hydrogen atoms form two covalent bonds with the one oxygen atom, causing it to be polar. This is because most of the electrons are pulled toward the hydrogen atoms, this will cause one end (Oxygen) of the molecule to be positively charged, and the other ends (Hydrogen) to be negatively charged. This is why water is known for it's hydrogen covalent bonds. That means that when one molecule of water is exposed to another molecule of water the negative ends of one are attracted to the positive end of the other (opposites attract). This polar attraction is what causes water have surface tension.
What bond occurs when a pair of electrons is unequally shared between two atoms?
In H2O the electrons are shared by the oxygen atom and two hydrogen atoms. Although there are two hydrogen atoms, the electro-negativity (or ability to attract electrons) of the oxygen is greater than the hydrogens, therefore the electrons are pulled greater towards the oxygen resulting in the oxygen becoming "negatively charged" this results in the molecule becoming what is known as a "dipolar molecule". This is what causes water to be attracted to each other as each molecule has a positive and negative pole. Answered by Mason Rawling-Jones (currently 15).
Why wont alka seltzer dissolve in vegetable oil?
Vegetable oil is made of nonpolar molecules and vinegar (which is a solution of approximately 5% acetic acid and water) is made of polar molecules. Where solubility is concerned, the rule is usually "like dissolves like", or materials with similar types of intermolecular forces tend to be soluble in one another. The carbon and hydrogen atoms in its fatty acid chains have similar electronegativities, so the electrons aren't pulled to any one part of the molecule. This makes it attracted to other materials that are nonpolar (have no negative or positive charges), but not to materials that are polar. Vinegar contains oxygen-hydrogen bonds that are quite polar--the oxygen pulls electrons away from the hydrogen, giving oxygen a partial negative and hydrogen a partial positive charge. That results in molecules that are attracted to other substances with full or partial charges.
What causes water to a polar molecule?
Because of its shape. it is a bend molecule. Since Oxygen is more electronegative that hydrogen, you get something called a net dipole making the oxygen "delta" negative. this makes the hydrogen delta positive since the oxygen atom is more electronegative ( i like to think of it as being "hungry for electrons" or a selfish atom that hogs the electrons), the electrons spend more time orbiting the oxygen that it does the hydrogens. therefore the oxygen is slightly (or delta) negative and the Hydrogen, since the electrons spend less time in orbit around the hydrogen, is delta (slightly )positive since an electron has a negative charge.
How does a hydrogen bond compare to a covalent bond?
The short answer, without too much research or effort on my part, is that hydrogen bonds are weaker. The are due to the attraction of hydrogen to other elements (such as oxygen) that have lone pairs swimming around. Covalent bonds are due to electronic effects, and as such are stronger.
Why does the chlorine atom have a partial negative charge in a molecule of hydrogen chloride?
In a molecule of hydrogen chloride, the shared pair of electrons in the covalent bond between hydrogen and chlorine is pulled closer to the more electronegative chlorine atom, causing it to have a partial negative charge. This unequal sharing of electrons results in a dipole moment, with chlorine being partially negative and hydrogen being partially positive.
What compound is formed at the end of electron transport chain?
The compound formed at the end of the electron transport chain is water. Oxygen acts as the final electron acceptor and combines with hydrogen ions to form water as a byproduct of the electron transport chain in aerobic respiration.
