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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.
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Is air a compound of elements or a mixture of elements?
Air is not an example for any of the given. It is a mixture of various elements and compounds.
A great deal of energy is produced when an ionic compound is formed?
False. Formation of a compound is usually exothermic because a Noble Gas configuration forms around each atom. Therefore energy is given off during formation, and the atoms in the compound are more stable.
Do all pure samples of a given compound have the same percent composition?
A compound is a combination of two or more elements. These elements join together based on their molecular bonds. No two elements combine in the same percentage.
What is the name given to the energy required to separate one mole of the ions of an ionic compound?
Lattice Energy
What is the name given to a substance made up of two or more different elements joined together?
a compound
A given compound is always made of the same elements in the same?
A given compound is always made of the same elements in the same proportion.
Is air a compound of elements or a mixture of elements?
Air is not an example for any of the given. It is a mixture of various elements and compounds.
What is the meaning of determination of formula unit of compound?
It is the sum of atomic masses of all the elements in a given compound.
Which pair of elements form a molecular compound?
The question is incomplete. No options are given (for which of the following) to answer the question.
What is the general name given to the compounds formed when elements burn in oxygen?
When oxygen is burned inside of large stars, the principle elements that are formed include: Hydrogen - 1, Deuterium - 2, Helium - 4, Magnesium - 24, Silicon - 28, Silicon - 30, Phosphorous - 30, Phosphorous - 31, Sulfur - 31, Sulfur - 32, as well as free neutrons.
A great deal of energy is produced when an ionic compound is formed?
False. Formation of a compound is usually exothermic because a Noble Gas configuration forms around each atom. Therefore energy is given off during formation, and the atoms in the compound are more stable.
Do all pure samples of a given compound have the same percent composition?
A compound is a combination of two or more elements. These elements join together based on their molecular bonds. No two elements combine in the same percentage.
What is the name given to the energy required to separate one mole of the ions of an ionic compound?
Lattice Energy
A given compound can be decomposed into two substances What are these substances?
in a decomposition reaction a chemical breakes down into the elements in the compound e.g: compound = element + element
Do relative proportions of elements in a given compound vary from sample to sample?
im not really sure....sorry
What is the name given to a substance made up of two or more different elements joined together?
a compound
What is formed when one phosphate is given up by ATP in order to release energy?
ADP
