Gold and Nitrogen are elements, not compounds of elements like "Air" or "Table Salt."
Magnesium cannot be broken down further, beyond electrons, protons and neutrons.
nitrogen aluminum and zinc are elements therefore they cannot be separated into several elements
Substance, classified as an element and compound. For an element, it cannot be separated into another simplier substance; for a compound, it can be dicomposed into elements using chemical processes.
Because it cannot be broken down into a simpler substance by any substance and is composed of atoms that have the same number of protons in the nucleus. IN the case of gold that number is 79.
= An uncontrollable substance that cannot be contained? =
All matter is a substance.
Table The others can be subdivided and still be what they are: half of the air is still air, half the salt is still salt, half the gold is still gold, half the nitrogen is still nitrogen - but if you cut the table in half you no longer have a table.
Magnesium cannot be broken down further, beyond electrons, protons and neutrons.
Because carbon cannot be changed into a simpler substance by normal means
nitrogen aluminum and zinc are elements therefore they cannot be separated into several elements
Substance, classified as an element and compound. For an element, it cannot be separated into another simplier substance; for a compound, it can be dicomposed into elements using chemical processes.
yes all homogeneous are pure substance because all the part are the same throughout and they cannot be easily separated or broken down into simpler substance by physical means.
Because it cannot be broken down into a simpler substance by any substance and is composed of atoms that have the same number of protons in the nucleus. IN the case of gold that number is 79.
= An uncontrollable substance that cannot be contained? =
Any substance that cannot be broken down into simpler substances is an?
For a given substance, yes, it's gaseous form is hotter than its liquid form. However, you cannot say that a gas, of any substance, is generally hotter than a liquid of some other substance. Different substances have different boiling points. The boiling point for Nitrogen, for example, is well below the boiling point of water, and even below the freezing point of water. So you cannot say that Nitrogen gas is hotter than liquid water.
I cannot see the list of substances in which you are referring to.