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When a metal is heated sufficiently electrons are given off by the metal. this phenomenon is known as?
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Why do metals always impart their characteristic colors to a flame?
The defining characteristic of metals, in a chemical sense, is that they have between one and three valance electrons and they tend to lose electrons, as compared to non metals which have a larger number of valance electrons and are much less prone to losing them. So, when a metal is heated sufficiently, outer electrons get hot enough to leave the atom. Then, electrons are recaptured. In the process of becoming part of an atom again, an electron emits a photon, with a typical wavelength for a given element, thereby creating a characteristic color. As a result of this process, the color of a flame is mainly due to whatever metals are present.
What gas is given off when zinc carbonate is heated?
carbon dioxide, when carbonates are heated carbon dioxide is is given off.
What drugs cause death?
All of them, given a sufficiently large dose.
When calcium carbonate is heated what gas is given off?
carbon dioxide is produced when it is heated
Who created journalism?
William Randolph Hearst is given credit for that phenomenon.
Is energy given or taken off with electrons?
It is given off
What gas is given off when calcium carbonate is heated?
Carbon Dioxide is given off. (CO2)
What name is given to water evaporating from plant leaves?
This phenomenon is called transpiration.
Who created yellow journalism?
William Randolph Hearst is given credit for that phenomenon.
What are electrons that are located at a given distance from an atom's nucleus in a region called?
valence electrons
When elements react what are given away?
electrons
What is the number of electrons that pass a given point at a given time?
Wave speed
