Yes. Compounds can undergo chemical changes to become elements. An example would be the following: Zn(s) + CuCl2(aq) ===> ZnCl2(aq) + Cu(s). THe CuCl2 is a compound and it is changed into the element Cu(s) and also into zinc chloride.
Yes. the compound can undergo chemical change to become elements again.The compound dissociates to give the elements from which it is made.This can only be done by providing certain conditions.
All chemical elements can be obtained as pure elements after different chemical reactions.
False, because a compound is a pure chemical substance consisting of two or more different chemical elements. It can be separated into simpler substances by chemical reactions.
Most atoms tend to undergo chemical reactions combining in ways that cause their atoms to become more stable
Elements listed in the periodic table of elements are neutral; they do not have a charge. When they undergo chemical reactions they may become charged ions. There is no single most common charge for ions, but the most common are -1, -2, -3, +1, +2 and +3.
No. They combine when the compound is more stable. Any system will tend to go toward a more stable state. If a molecule is less stable than the individual atoms there is a good chance it will fall apart.
Silver Nitrate is a compound. A compound is formed in such a way that its constituent elements share or transfer electrons in order to become stable. So, the valencies are complete. A compound is stable. Only elements have valence electrons.
Any compound can in some way be broken down into its elemental constituents (although they may spontaneously partially or entirely recombine afterwards). One method that will always do this is thermal decomposition, or thermolysis. In this chemical process the compound is simply heated to a high enough temperature that all the chemical bonds between the atom break. Another gentler method uses the techniques of chemical analysis, plus some additional steps to separate the elements of the original compound from the elements of the carrier compounds used to separate them from the original compound.
If two elements are chemically combined, they become a compound which will have totally different chemical and physical characteristics than either of the two original elements.
A compound achieves electrical neutrality when it is formed by the sharing of electrons, or the transfer of electrons. In either case, the atoms of the elements become electrically stable when they undergo chemical bonding by achieving a noble gas electron configuration (also commonly known as an octet, which is not accurate for hydrogen, lithium, or beryllium). Therefore the compound produced by this chemical bonding is also electrically neutral.
Yes in the sense that you can have a compound and add a chemical or element to it in order to remove an atom from the compound, thus returning it to its elemental form. For example, KI + Li --> LiI + K. The Potassium (K) was in a compound but is now alone in its elemental form after the reaction. (Lithium can replace Potassium because it is more reactive. See the Activity Series for more info on that).
False, because a compound is a pure chemical substance consisting of two or more different chemical elements. It can be separated into simpler substances by chemical reactions.
Yes in the sense that you can have a compound and add a chemical or element to it in order to remove an atom from the compound, thus returning it to its elemental form. For example, KI + Li --> LiI + K. The Potassium (K) was in a compound but is now alone in its elemental form after the reaction. (Lithium can replace Potassium because it is more reactive. See the Activity Series for more info on that).
Chemical Bonding
A compound is made up of 2 or more elements. For example: NA (sodium) is an element, but if you add another element, CL (chloride) to the NA, you would have the compound NACL (sodlium chloride) which is salt.
Elements become compounds after chemical reactions.
No. Only radioactive elements, which undergo radioactive decay can change to different elements.
Most atoms tend to undergo chemical reactions combining in ways that cause their atoms to become more stable
Two or more elements combined can become a compound.