Every element found on the Periodic Table can be found in a natural environment. None are man-made. Only compounds can be man-made.
None. Most elements are almost always found combined but there are exceptions.
Magnesium
Magnesium
hydrogen
That is known as the law of definite proportions
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substances that cannot be broken down chemically into other substances are
New compounds can form through single replacement, double replacement, decomposition, synthesis, or combustion. Single replacement is where a compound reacts with an element and the element replaces one of the other elements within the compound. Double replacement is where a compound reacts with another compound and one element from each compound swaps places with the other element from the other compound to form brand new compounds. Synthesis is where two elements react with each other to form a compound. Decomposition is where a compound breaks into the elements that form it. Combustion is where oxygen combines with another compound to produce CO2 and H2O.
Basically mecuric ions exist in solution as Hg2+,Hg22+ <P> <P>Neither, in it's natural state. Mercury (Hg) is an element, and exists as a neutral atom, unless it combines with other elements. In this case, it combines with negative elements (for example chloride -Cl) and then it has a positive charge (Hg)++(Cl-)2. Then, it is a cation.</P>
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
water,oxygen and aluminum.
ReactivityThe ease and speed with which an element combines with other elements and compounds is called the "reactivity" of the element.
Almost any element, including most of the noble gases, can form covalent bonds, but non-metallic elements other than the noble gases form the most.
Could be many different elements
Sodium
Alkaline Earth Metals i think :s i'll come back and change if it is wrong :P
Argon is a noble gas; it hardly combines with any other element.Argon is a noble gas; it hardly combines with any other element.Argon is a noble gas; it hardly combines with any other element.Argon is a noble gas; it hardly combines with any other element.