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What is the change in energy when one mole of a compound is assembled from pure elements?
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What type of change must occur to form a compound?
If this is for SOS the answer is chemical.The following answer is incorrect."a change in energy has taken place. when a new compounds is fromed it produces either heat energy, light energy or both."
Chemical energy is contained in what?
chemical energy is the energy stored in a matter such as food and fuel
How does thermal energy cause substances to undergo chemical change how does thermal energy cause substances to undergo chemical change?
Thermal energy cause thermal decomposition of a compound; the bonds between atoms are weakened.
Is sugar water a compound or mixture or element?
It is both. A compound mixture is made of pure elements. For instance; salt is made of sodium chloride. Sodium voilently reacts with water, and chloride is extremely toxic, but when you eat salt, nothing happens. Why? A chemical change undergoes. A compound is 2 or more elements chemically mixed.
What are the particles called Radioactive elements release energy?
Nucleus that causes a neutron to change into a proton is called a beta particle.
The change in enthalpy that accompanies the formation of a compound from its elements?
The energy change that happens when a substance forms from its elements (APEX)
Is energy given out when elements are formed from a compound?
In almost all cases, it requires energy to break a compound down to its constituent elements. There are, however, some cases in which the decay of a compound into its constituent elements would release energy. Platinum hexafluoride would be an example.
What type of change must occur to form a compound?
If this is for SOS the answer is chemical.The following answer is incorrect."a change in energy has taken place. when a new compounds is fromed it produces either heat energy, light energy or both."
How can the elements in an atom can have potential energy?
The chemical bonds between the atoms of the elements in a molecule or ionic compound contain potential energy.
What best describe the enthalpy of formation of a substance?
The enthalpy of formation of a substance is the amount of energy that was put in or evolved from the making of that substance from the individual elements.
Two or more elements that combine as a result of a chemical reaction form?
A compound is formed. The process may require a certain amount of energy (heat) to react, or it may release energy in the form of heat.
Is it true of false that the energy of an ionic compound is higher than that of the separate elements that formed it?
I believe that it depends on the elements that you are combining or seperating.
What is an important energy-storing compound that contains only the elements carbon hydrogen and oxygen?
Carbohydrates :)
Why are some elements stable on their own while others are more stable in compound?
Some elements are stable on their own because they have a complete outer energy level. These elements are called noble gases. Hydrogen and Helium have a complete energy level with two electrons and all of the other elements are stable with eight. When an element doesn't have a complete outer energy level it is stable in a compound. This is because it is being combined with another element to complete it's energy level.
What best describes the enthalpy of formation of a substance?
The energy change that happens when a substance forms from its elements (APEX)
What type of change is needed to break down a compound?
The only way to break down a compound is through chemical change. sometimes, energy is needed for a chemical change to happen. 8thGrader,(:
Is glucose an element mixture or compound?
Glucose is a compound. Oxygen, carbon and hydrogen are individual elements that create glucose. Glucose is a simple sugar that is important source of energy for living organisms.
