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The enthalpy change associated with a reaction = sum of (energies of bonds broken) - sum of (energies of bonds formed). Thus, if this value is net negative, the reaction is exothermic; the products are also more stable than the reactants (lower-energy bonds). A positive enthalpy indicates an endothermic reaction.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoBond making release energy wheres bond breaking absorb energy,
so bond making is an exothermic process whereas bond breaking is an endothermic process.
Wiki User
∙ 10y agothe energy is hot so it break and then it goes around till it releases everything
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What is the role of a chemical bond in a energy transfers?
The amount of energy required to break a bond and produce neutral atoms is called the bond energy. It harbors the energy.
What is the role of iron ions in oxygen transport?
In metalloproteins, metal ions are usually coordinated by nitrogen, oxygen or sulfur.
What role does the spark from the igniter play in the reaction that takes place when propane is burned in a gas grill?
The spark provides enough energy to break the bonds of reacting molecules and get the reaction started.
What is the role of energy in chemical reactions?
energy is released or absorbed.
What role do hydrogen bonds play in large molecules?
Hydrogen bonds are considered weak bonds, however in large biochemical molecules, they can act as a stabilizer. An example is a protein, which contains numerous weak bonds (Hydrogen, van der Waals, and hydrophobic), after the primary structure.
What role does lattice energy play in forming an ionic compound?
what role does lattice energy play in forming an ionic compound?
What is the role of an electron is an atom?
Electrons determine the ways in which atoms join together chemically, by forming bonds with other atoms. They also are carriers of electrical energy (current).
What is the role of an electron in an atom?
Electrons determine the ways in which atoms join together chemically, by forming bonds with other atoms. They also are carriers of electrical energy (current).
What is the primary role of an electron in an atom?
Electrons determine the ways in which atoms join together chemically, by forming bonds with other atoms. They also are carriers of electrical energy (current).
What is the role of a chemical bond in a energy transfers?
The amount of energy required to break a bond and produce neutral atoms is called the bond energy. It harbors the energy.
Why can only certain elements form double bonds?
Only certain elements have electrons capable of forming double bonds in their outer electronshell. Also, size plays a major role in the possibility of forming double bonds. If the pi orbitals of the two atoms can overlap then they will be able to make a strong double bond. If the atom is too big then the pi orbital won't be able to overlap with its neighboring atom; preventing it from forming a double bond. Only C,N,O,P,S are able to form double bonds.
What is the role the moon in forming tides?
The role of the moon forming tides is that gravity is pulling the water up
What is the role of the moon in forming tides?
The role of the moon forming tides is that gravity is pulling the water up
What covalent bonds are their role in combining atoms?
The covalent bonds are their role in combining atoms Is In Your Facee ;D
How do intra-molecular hydrogen bonds affect the molecule in its gaseous phase?
In general, the way the hydrogen bonds affect something (like water) in its gaseous phase is that they still want to "hang on a bit" and "connect" the molecules. But they can't because the molecules have too much kinetic energy. Remember that the electrostatic attraction that is the basis for hydrogen bonds didn't just "disappear" when the molecule gained enough energy to escape its liquid associates and become a gas. It's still there and plays a minor role in the behavior of the molecule. There is something else that is important when something like water is a gas in air (because the water molecules have enough energy). A water molecule may form a bond and combine with another molecule briefly, and then break away. In fact, molecules of water may be (will be) forming hydrogen bonds with other moledules and then breaking away all the time. The higher the energy of the system in which the molecules are operating, the less frequently a pair of water molecules will "hook up" and the less time they'll stay together. But the "hook ups" will still happen to a degree. In liquid water, the hydrogen bonds make and break all the time, but the "low energy" in a container of liquid water allows the hydrogen bonds to "call the shots" because the molecules don't have the energy to break away as easily.
When hot many mammals sweat to control their body temperature Evaporation plays an important role but the direct effect is due to?
, cools by the large amount of heat needed to break the hydrogen bonds between water molecules.
What plays a big role on forming our worldwide?
Communication
