Answer:
El color de la llama se debe a que los átomos del metal absorben energía de la llama; dicha energía se transforma en luz cuando el átomo vuelve a su estado normal. Los agentes productores del color se usan en forma de sales y raramente como metales en polvo
Explanation:
Answer:
A. 4 only
Explanation:
One of the tests for purity is by determining the melting point of a substance. A pure substance has a sharp meting point.
If the solid in question is a pure solid, when it is heated, it will exhibit a sharp melting point. Mixtures however melt over a range of temperatures due to the presence of impurities in the solid.
Answer:
there are 3 different elements in that equation
Explanation:
Fe is the element Iron, Cr is the element Chromium, and O is oxygen
Nonene. Since it has c-c double bonds, we can be sure that its an alkene. To know its name, we can deduce from the number of carbon atoms ie 9.
Because it doesn't get direct sunlight so it gets cool
