they are 2 completely different substances usually- If they combine they make a compound or a molecule. this is 2 substances together.
Example-
H2O=Oxygen+2 Hydrogin atoms(water)
No, but 2 elements can form a chemical compound
To an atom to be changed, the nucleus of the particular atom should change, and they are considered as nuclear reactions, not chemical reactions.
No. Elements are not created or destroyed in any chemical reaction. Combining elements chemically can only ever form a chemical compound. The nuclei of the elements are never affected.
anything that is not in the periodic table probably contains more than one kind element. steel, plastic, rubber are all examples
The only planet with oxygen (known to Man) is Earth.That is to say, only Earth has a significant amount of the element oxygen in its atmosphere.Other planets do have oxygen, but it is chemically combined in the form of compounds, like carbon dioxide.
The two most common are hydrogen (90%), helium (9%) and the rest make up the final 1% The oceans are 1/3 hydrogen, we have relatively little hydrogen on the inner planets because the sun's radiation "blew" most of it (the lightest element) to the outer planets like Jupiter, which is made mostly of hydrogen and is more massive than all of the other planets combined.
Elements are identified based on their absorption spectra. Every element absorbs a unique set of frequencies when light passes through it. Scientists can determine which elements are present based on which portions of the star's light are absorbed.
There are a lot more. Each element has several possible absorption lines. In fact the element iron has several hundred lines.
When one element is combined with another element, a chemical compound results. The elements are chemically bonded together to make this compound.
no, but compounds are made of elements chemically combined.
a new element
Compound. It is two elements chemically combined.
compound. Because a compound is chemically combined of 2 elements
Compounds are composed from elements.
An element is said to be chemically reactive when it combines with another element. These two elements will create a new compound.
An element is a pure substance that cannot be broken down into a simpler form. An element is made of two or more atoms that are chemically combined. All elements are listed on the periodic table of elements.
A free element has an oxidation number of 0. It is not combined with or chemically bonded to any other element. Examples of free elements are nitrogen molecule and hydrogen molecule.
It isn't a element, as an element is one atom. It would be a compound if the elements chemically combined, but if they didn't, its a misture
An element is composed of only one type of atom. Compounds are composed of different types of atoms (different elements) that are chemically combined.
Magnesium carbonate is a compound. It consists of the elements magnesium, carbon and oxygen chemically combined. As a rule of thumb anything with two or more elements chemically bonded together is a compound.