Yes
Yes, and it is more common than not. Elements of each style may be combined in differing amounts, different styles may be employed in different areas of a city, or both.
The sample contains small amounts of 15 different elements.
Chemical
The molar mass of a compound is directly related to its composition. The molar mass is the sum of the atomic masses of all the elements in the compound. The composition of a compound refers to the types and amounts of elements present in it. Therefore, the molar mass provides information about the composition of a compound by indicating the relative amounts of each element present.
Because some elements have different amounts of ions. The roman numerals are used to determine which ion is being used.
Because a mixture means that it contains a mix of substances. And you can choose to mix different amounts (solutions), instead of where in order to create that compound, a specific ratio of elements are required. If the ratio is incorrect, the result will not equal the same compound.
A1. Air is neither a solution nor a compound. It is a mixture from which the individual components are easily separated.A2. I would really call it more of a compound. It's a mix of many different elements like oxygen or nitrogen. There are also many elements found in trace amounts.
The small amounts of different elements in a mineral can change its color, hardness, and other physical properties.
Natural gas is a mixture of hydrocarbons, primarily methane, with small amounts of other gases like ethane, propane, and butane. It is not a compound because it does not consist of different elements chemically bonded together, but rather a mixture of different gases.
They all have different amounts of protons in the nucleus, different properties, and no two things can be identical.
A cast iron skillet is not an element or a compound. It is an object made of a mixture of elements, primarily iron with small amounts of carbon and other trace elements.
When sodium and chlorine combine to form sodium chloride (table salt), they create a stable compound with different properties than the individual elements. This compound is safe for consumption in moderate amounts because the chemical bond between sodium and chlorine atoms holds them together in a harmless form.