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Answer ;
-An element is a substance containing only one type of atom, for example; H2 or 02 (consisting of atoms that all have the same number of protons).
-Microscopic, single atom of that element
-Macroscopic, sample of that element large enough to weigh on a balance
- A substance that cannot be broken down chemically; e.g; sodium metal,
Explanation;
-An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's atoms have the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions.
-An element is uniquely determined by the number of protons in the nuclei of its atoms.
The four different chemical meanings for the word element are;
- Substance
- Substance - Macroscopic
- Substance - Macroscopic - Microscopic
- Substance - Macroscopic - Microscopic- Generic
In Chemistry, an element is defined as a pure substance that consists of only atoms that all have the same numbers of protons in their nuclei. Thus, it cannot be broken down into any other substance as it is made up of its own atoms.
The other chemical meanings for element are;
1) Substance; A substance contains only one type of atom and as such it fits with our definition of an element. Examples are Hydrogen and oxygen gas
2) Macroscopic; This is a sample of an element that is large enough that it can be weighed on a scale. Examples are graphite and diamond that contain only carbon.
3) Microscopic; This is just a single atom of an element that is so tiny that it can't be seen with the eyes.
4) Generic; This means the atoms are present in some form in body. They all have protons and neutrons in their nucleus and have electrons moving round their orbitals.
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