An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is composed of only one type of atom.
An element. An element is a pure substance that consists of only one type of atom and cannot be broken down further by chemical means.
An element is a pure substance made of one type of atom that cannot be broken down into simpler substances by chemical means. Each element is defined by the number of protons in its nucleus, which determines its unique chemical properties.
An element is a substance that cannot be separated or broken down into simpler substances by chemical means. Examples include oxygen, gold, and carbon.
A pure substance that cannot be broken down into simpler substances by physical or chemical means is an element. This is because Elements can't be broken down chemically into other substances because there is nothing to break them down into.
pure
An element is a pure substance that cannot be broken down into simpler substances by chemical means.
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is composed of only one type of atom.
An element.
A substance that cannot be broken down is a pure substance
Carbon is an example of an element, which is a pure substance that cannot be broken down into simpler substances by chemical means.
A pure substance that cannot be chemically broken down into simpler substances.
An element. An element is a pure substance that consists of only one type of atom and cannot be broken down further by chemical means.
Atom of carbon?
A pure substance that cannot be broken down into simpler substances by physical or chemical means is an element. This is because Elements can't be broken down chemically into other substances because there is nothing to break them down into.
Carbon monoxide is considered a pure substance because it is a compound composed of two elements, carbon and oxygen, in a fixed ratio (1:1). It cannot be separated into simpler substances by physical methods.
Representative elements are the elements also known as the lanthanides. Source: Chemistry teacher