Breaking covalent bonds?
In the first and second option, bonds are broken, but they are weak intermolecular forces called Vander Waal forces of attraction when it is heated these forces break changing solid iodine into gas. NaCl is an ionic compound, so when its changed from solid to liquid ionic bonds break. In the case of solid iron, metallic bonds are broken because its a metal. Diamond is a giant covalent structure, only bonds there are covalent bonds between carbon atoms. :D hope this helps...
Which process are covalent bonds broken?
A) Solid Silver melts B) Solid Potassium chloride melts C) Solid Carbon (graphite) sublimes D) Solid Iodine sublimes E) Glucose Dissolves in water ---- Can't be A because it's Ionic compound? Cant be B because that is an ionic bond? I would say C but solid carbon has no bonds? Iodine also has no bonds? Glucose could be a possibility? because water breaks apart the weak attractive force between elements but is that really a bond? could someone help me what I am thinking wrong? :(
Do covalent bonds break in water?
If you think of the covalent bond as a wave function in which there is a pair of electrons, and these are delocalised over the molecule, but because of polarity, the probability density at one end is higher than the other, then the condition to break the bond, other than to smash it with a dump of energy, is that the electron pair migrates completely to one end. Now, this is much easier to occur if something can stabilise the charge at the two ends, and it happens that water is ideal for that. As an example, take hydrogen chloride. If the charge migrates towards the chlorine end, lone pairs from the oxygen of water will be attracted to the developing positive charge on the hydrogen, and the energy of that interaction, and a similar polarising stabilisation on the chlorine from water, will overcome the energy required to move the charge, and the net result is, the charge will migrate and the water will stabilise the individual ions, which, however, will still have a strong attraction to each other. It is wrong to believe these ions have complete freedom of movement, although of course they may well exchange with other ions. The electric field between a positive and negative ion is still strong, albeit weakened by the polarisation of the water.
It is easy to broke bond of single covalent bond?
Firstly, a definition of covalent bonds:A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.Ionic bonding is the complete transfer of valence electron(s) between atoms. No sharing.Covalent bonds are much stronger than, say, ionic bonds. Often times ionic bonds can be broken with the simple addition of water. Since molecular compounds are sharing electrons, the bonding much much stronger.I like to give my students a simple analogy. Think of covalent bonds in molecular compounds as holding a happily married couple together in a relationship with a lot of sharing. Think of ionic compounds as being a relationship where the couple has a whole lot of giving and taking, but not a lot of sharing. In short, the couple who shares everything will likely take more effort to break up.It is overly simplified, but ionic compounds dissociate, or come apart in water if they are highly soluble. Molecular compounds do not dissociate in water.Table salt (NaCl) for example will come apart. Little energy required, simply dissolve it in water and the ions come apart Na+ and Cl- float around in solution. (again over simplified, but basically what happens)Table Sugar, C12H22O11, a molecular compound does not come apart in water. The bonds will break, but additional energy will have to be added to break specific bonds.Different bonds, like Carbon-carbon, carbon - hydrogen or oxygen-hydrogen, would take different amounts of energy to break.To clarify, heating up water does not break the covalent bonds that hold together the Hydrogens to the oxygen (H2O). Covalent bonds are intramolecular bonds (between atoms), while the bonds between water molecules that hold water together as a liquid, that break when it boils at 100 degrees Celsius, are intermolecular bonds. INTRAmolecular forces are much stronger and generally require a lot of energy to break them. INTERmolecular forces can be broken by heating the water up - separating the molecules from each other as liquid becomes a gas.
What covalent bonds in methyl salicylate and water were broken during the reaction?
in the methyl salicylate; 3 covalent bonds between the C-H. 1 covalent bond between the O-C. in the H2O; ALL bonds broken, but one covalent bond REFORMED into O-H. Note; in reactions, the covalent bond in all the molecule sometimes breaks and reforms. Bonds do not break one at a time if only one is needed to. All may break, but some may reform.
In which of the following processes are covalent bonds broken?
d) C(diamond) -> C(graphite) because diamond and graphite are different allotropes of carbon. they have different structure. others are just changed into different phase which is a physical change
Are covalent bonds also broken when liquids boil? why?
Molecular substances tend to be gases, liquids or low melting point solids, because the intermolecular forces of attraction are comparatively weak. You don't have to break any covalent bonds in order to melt or boil a molecular substance.
When does the covalent bond breaks?
When bonds are formed, energy is released. Any kind of bond. So, for covalent bonds to be broken. The amount of energy, that was released during bond formation, has to be supplied to the compound. In order to break the bonds.For example,C + O2 -> CO2This reaction gives out -393kJ units of energy. (-ve sign indicates that energy is released)In order to break the bond +393kJ of energy has to be supplied to the formed Carbon dioxide in order to break the bond.P.S: 393 kJ of energy is released for every mole of CO2 formed. So 393 kJ must be supplied to 1 mole of CO2.
If you boil water, do you break the covalent bonds between hydrogen and oxygen?
Only the relatively weak Intermolecular Forces are broken when liquid changes to a gas. The covalent bonds are much stronger It takes electricity (e.g. lightning) to break them apart.
What happen when non polar covalent bond is broken - energy?
As soon as non polar covalent bonds break , the atoms involved in the bonding departs with their corresponding electrons including the electrons that are contributed in the bonding.